<human>: Can you summarize the given text in a few sentences?

Hey guys,
This is mainly to the more experienced of you. I'm in college, and in my social group there is a person who has very strong and (in my opinion) irrational opinions. I could either give in and let it slide (which would be by far the easier option), or stand up against it (which I feel I should do on principle).

A bit more information:
If I give in, I will probably get invited to more social events. Their actions are hurting (not massively, but noticably) other people. Their actions have hurt other people on other occasions, but whenever they are in an argument with them, the others (who aren't currently in an argument) placate them, in order to not get on this person's bad side.
<bot>: Later in life, will I be glad that I played along with an irrational person, as it made my life easier, or will I regret that I didn't stand by my principles?