user554: https://biology.stackexchange.com/questions/7546/by-how-much-marijuana-will-shorten-typical-peoples-life
If it's truly politically incorrect, please just say so and point me where I can get credible answer on this question.
Can anyone tell me why by how much does cigarette shorten users' life is on topic (and up voted) while by how much does marijuana shorten users' life is off topic?
At first I made a mistake. I asked by how much marijuana will shorten my life. Probably none because I don't even smoke marijuana. What I really want to know is of course, by how much marijuan will shorten typical's user's life.
If I were asking about tobaco, I bet people would say, "It depends on how much you smoke, typically, you'll lost 20 years of your life." However, for that question, I got tons of downvotes over a small technical error that personal health is off topic. It's as if I were so dumb that I expect all of you know enough about me to diagnose my personal health problem.
Instead, I got tons of downvotes. I fixed that.
Then I got another ridiculously complaint about how I should ask for morbidity which is not the question at all.
C'mon.....
No body knows by how much marijuana will shorten typical user's life? Yes I know it'll vary from users to users. Another technicality that's too obvious. Or is people try to be too politically correct here that they just love to come up with some technical error to avoid answering a simple obvious question people should know before smoking marijuana?
Is it really off topic?
This seems like a simple question with reasonably simple answers. If the answer is 20 years like Tobacoo, it'll send a clear message to all the kids not to do it. If the answer is 0, it'll send another message.
Very simple. Reasonably precise. Very important. Not asked before. And I got tons of technicality.

user1413: In my opinion the question "By how much does marijuana shorten typical's user's life?" is a very good question having biological, epidemiological, medical and social aspects. I think biology.SE is the right forum to cover the biological, many medical and some epidemiological aspects of this question.

user6: We intentionally excluded medical advice from our scope, and this question is about medical advice, even if you rewrite it a bit. Such comparisons of health effects are in the end like questions that directly ask for personal medical advice, someone asking "Is eating X healthier than eating Y?" and similar questions is not interested in the biology but in medical advice. 
Your efforts to reduce the complex biological effects of marijuana to a single number also give the impression that you're not at all interested in the biological aspects. 

554: <p><a href="https://biology.stackexchange.com/questions/7546/by-how-much-marijuana-will-shorten-typical-peoples-life">https://biology.stackexchange.com/questions/7546/by-how-much-marijuana-will-shorten-typical-peoples-life</a></p>

<p>If it's truly politically incorrect, please just say so and point me where I can get credible answer on this question.</p>

<p>Can anyone tell me why by how much does cigarette shorten users' life is on topic (and up voted) while by how much does marijuana shorten users' life is off topic?</p>

<p>At first I made a mistake. I asked by how much marijuana will shorten my life. Probably none because I don't even smoke marijuana. What I really want to know is of course, by how much marijuan will shorten typical's user's life.</p>

<p>If I were asking about tobaco, I bet people would say, "It depends on how much you smoke, typically, you'll lost 20 years of your life." However, for that question, I got tons of downvotes over a small technical error that personal health is off topic. It's as if I were so dumb that I expect all of you know enough about me to diagnose my personal health problem.</p>

<p>Instead, I got tons of downvotes. I fixed that.</p>

<p>Then I got another ridiculously complaint about how I should ask for morbidity which is not the question at all.</p>

<p>C'mon.....</p>

<p>No body knows by how much marijuana will shorten typical user's life? Yes I know it'll vary from users to users. Another technicality that's too obvious. Or is people try to be too politically correct here that they just love to come up with some technical error to avoid answering a simple obvious question people should know before smoking marijuana?</p>

<p>Is it really off topic?</p>

<p>This seems like a simple question with reasonably simple answers. If the answer is 20 years like Tobacoo, it'll send a clear message to all the kids not to do it. If the answer is 0, it'll send another message.</p>

<p>Very simple. Reasonably precise. Very important. Not asked before. And I got tons of technicality.</p>
 1413: <p>In my opinion the question "By how much does marijuana shorten typical's user's life?" is a very good question having biological, epidemiological, medical and social aspects. I think biology.SE is the right forum to cover the biological, many medical and some epidemiological aspects of this question.</p>
 6: <p>We intentionally excluded medical advice from our scope, and this question is about medical advice, even if you rewrite it a bit. Such comparisons of health effects are in the end like questions that directly ask for personal medical advice, someone asking "Is eating X healthier than eating Y?" and similar questions is not interested in the biology but in medical advice. </p>

<p>Your efforts to reduce the complex biological effects of marijuana to a single number also give the impression that you're not at all interested in the biological aspects. </p>
