They also have literally no reason to treat you right because in real life people just don't throw themselves at you and doing everything so that you'll love them right after you meet the,. Actually, wait, no, they do. They're called sycophants.

And to be fair, both Yukari and Junpei start out being fairly friendly to you. It's only when you start spending a lot of time together that you start seeing the darker parts of their personalities - which is, again, realistic.

And yes, I am enjoying both of these characters better because of the fact that I was roleplaying that guy as a self-insert protagonist. Because those flaws made them feel more real and the experience felt much more visceral than P4's wish-fulfillment fantasy.

And sorry, but I really have no clue how you can get actual, deep friendships with other people when you just go "nope, you're a jerk, gtfo" if they ever wrong you in any way. Like, everyone has flaws, everyone's patience has limits, and you will encounter clashes at one point or another in an actual friendship that is not just surface-level hanging out etc. You cannot realistically expect someone to always be their perfect selves for you while also literally claiming you'd drop them the second they act like a jerk. A true, deep friendship is a type of relationship, and relationships need work in order to function well. Just like with a romantic partner, you really have to try to reach an understanding in spite of differences, rather than pretending the differences that cause you to clash don't exist.