Why is everyone mean and evil?

They might be the victims of the "Roughhousing Encouraged" NAP (if you have EL), or they have points in Mischief (I avoid both). You didn't mention actual fighting, though, or if you have Seasons. But might also be Neighbourhood Brawl or Prank Day. I avoid those as well.

I'm not sure anymore if using cas.fulleditmode to change traits will do any good. Removing traits with cheats will some times make the traits "stick", and in some cases still give moodlets and behaviour connected to the removed traits. I've some times done this when making over townies from Manage Households. Might be worth a try :)

I don't know.

The only thing I do know for sure is that if all the premade sims were kind and friendly and full of good traits, someone would come along and create a thread asking why are all the premades nice and kind and good.

Well I don't know how the townies are randomized by the game, but I have been making a ton of sims to fill up my worlds and I just randomize their names and traits, and about 80% of them always toss out an evil trait (which I have to change to something else). It's like it's a priority.

I think it seems like those traits come up a lot because there's not a lot of traits to choose from in the first place.

I've noticed the same. They're disproportionately mean and evil and I don't know why.

I honestly haven't noticed that, except for when people fight from the "roughhousing encouraged" NAP. I've noticed a few random NPC's be rude, but at least in my games, it seems to be the exception

All sims act the same here no matter the traits, yours might be influenced by NAP.. (also acts the same)

I've noticed that my sims have been extra mean, but I think it's due to a mod I have that makes even nice sims occasionally toxic.

Along with that my sims have been complaining so much. If they have something to say you'd better believe the next thing following is a complaint.

"HopeyStarr;c-17684282" wrote:
I've noticed that my sims have been extra mean, but I think it's due to a mod I have that makes even nice sims occasionally toxic.

Along with that my sims have been complaining so much. If they have something to say you'd better believe the next thing following is a complaint.

Mine did that too, and I got so fed up with it I started to use MCCC to tune away all that nonsense. Same with boasting/bragging. I mean, who would complain about sunny weather?? Unless its melting hot or you're a thin skinned vampire, that is.....but it seemed that whenever they were left to talk without my input, they would always complain about something.

I agree with several here, though, that randomizing will give evil/mean very very often. Along with traits I find utterly pointless, like Insider, cat/dog lover, dance machine and a plethora of others. Really wish they could add some traits that would actually affect our sims, and make them have at least some personality.

@Kathykins How did you MCCC out the complaints? I find the complaint dialogue options jarring and often do not fit in with the convo taking place. Like, who's going to complain to Father Winter's face? Seriously? He'll sic the gnomes on you! lol