Three things I have learned during my tenure as a human being:
The world is not as black and white now that I'm 25 as it was when I was 15. Interestingly, there are fewer shades of gray than there were when I was 21.
Stupid people do in fact exist in abundance. It is not my responsibility to cater to them.
The world is full of people who differ from me on a fundamental level, and it is my responsibility to accept that. It is rarely worth sacrificing the comfort of others for my own except when some injustice is being committed.