system
Given the following post, respond as if you're commenting on Reddit:
human
Why is Internet Explorer inferior to other browsers?

I've used IE since my family purchased our first PC in 1998.  I've never had any problems with it.  I've used Firefox and Chrome on other people's computers and I honestly can't tell the difference between them and IE.  Maybe that's because I'm not much of a technology person, maybe it's because there were huge differences and I just wasn't paying attention, but either way, I have no idea why people make a big deal out of it.
So please, being as specific as possible, explain to me what makes IE so bad.
gpt
To explain like you're 5: Internet Explorer is like the kid who eats paste during arts and crafts and can't follow basic instructions from the teacher. He can't color inside the lines and barely knows how to read (do 5 year olds know how to read? sorry, maybe ELI10). Not to mention his poor hygiene which causes him to get sick and pass it along to the rest of the class.

To be fair, his parents and teachers have talked to him about his problems and he been significantly more well-behaved in recent years, but he may still need some counselling. 

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To explain like you're actually an adult: IE has, historically, not been standards-compliant. Web developers often have to code around IE peculiarities to get their sites to work correctly. And, unfortunately, IE also historically has the largest market share due to it coming pre-installed and default on a majority of the world's computers. So it's not something web developers can just easily ignore. 

IE has also historically been very insecure - susceptible to things like drive-by downloads and other exploits which can give your computer viruses. 

Also, IE6 was the latest version of IE for...quite some time (citation needed)... and lacked several features of all other modern browsers, most visually tabbed browsing.

Fortunately, IE7/8/9 have been getting progressively better. I'd say 8 and 9 are actually pretty usable. I'd say most people are just still sore over IE6 at this point.