system
Given the following post, respond as if you're commenting on Reddit:
human
I think that organic food is too expensive and unnecessary. CMV.

I think that organic food is too expensive and unnecessary, but my sister doesn't. She has now moved away from home and only buys organic or fairtrade food products. It is expensive, and unnecessary. She has tried to explain to me why it is important to buy organic food and if I buy less and throw away less, the bill will be the same. But it simply doesn't work for me. Organic meat and eggs are almost twice as expensive as normal and it simply hurts to take the one which is more expensive. 

I understand that organic food may be better for the environment and our nature but I haven't heard a convincing enough argument for me to start buying 100% organic food as long as it is available and waste money on something that tastes the same.
gpt
The organic food movement is a truly great movement because it shows the true cost of the food that we eat. Assuming you live in the U.S.A., most of your produce comes from giant factory farms that are heavily subsidized by the government in order to keep providing you with the cheap food you are accustomed to and consume. These farms require a very specific amount of fertilizer, pesticides (insecticides and herbicides), and irrigation in order to grow their crops but the yields are very high. So what's the problem here?

Roughly 20-30% of the fertilizer that is applied to a field growing crops actually reaches the target plant and the majority is lost as run-off in water. Why does it matter? We are currently disrupting the nitrogen cycle which releases green house gases and we are displacing these invaluable fertilizers (nitrogen, phosphorus, and potassium) into the ocean. Some estimates (rough estimates at current rate of consumption and production) put the majority of the world's nitrogen supply in the oceans by about 2050. What about the fertilizer that does make it into the plants? These crops are shipped across the country to various markets and the food waste that contains valuable nutrients is not returned to the soil, continuing the need for a large amount of fertilizer to be artificially added to the soil. Organic farms produce and sell locally and as such have the ability to take the food-waste byproduct and compost it, which can be used to fertilize the fields and return the nutrients to the soil. They also typically do not use high yield crops which means they use traditional varieties of crops that don't require much in the way of pesticides or fertilizer and require much less irrigation. 

Another big problem with factory farming is that it degrades soil through extensive irrigation and over-tilling. Desertification (the destruction and loss of arable soil) is a problem that people all over the world are facing but we in the United States are very fortunate to have the bread basket region. This region can have up to 6 feet worth of top soil so it seems like a problem that will never have to be addressed but a large majority of farms keep destroying the top soil faster than it is replaced and we will eventually be left with nothing but bedrock if this continues. 

Meat is a big point of contention here as the red meats that are a staple of the American diet depend very heavily on these subsidized crops (corn mostly) in order to raise these livestock. It takes about 8 kg of feed to produce 1 kg of edible cow meat and an overall estimated ratio of about 16 units of resources to produce 1 unit of cow meat (this includes other resources on top of feed such as water). If this factory farms were not subsidized by the government, meat in the United States would be more expensive and more representative as to what it actually costs to produce.

This is all from a sustainability standpoint and it has a pretty simple breakdown. Factory farms currently do not operate on a sustainable level and more than likely will never be able to given the practices of factory farming and how the markets work. Organic farms are an attempt at sustainable farming. Yes, organic food products are more expensive than non-organic food products. This is because they represent the real cost of what that food took to produce. In this way and through sustainable farming practices, organic farms are a big step towards sustainable agriculture and protecting our future.