How do y'all play Sims 4

Mainly I play with only adult sims, aging off, no family stuff. Just see them make careers, make friends, do crazy stuff though it's sadly still a bit disappointing in the crazy department. 

I miss sims really doing surprising stuff by themselves. Like in Sims 3 I had this guy who kept hitting on his evil house mate. And always she'd slap him, beat him up or do something similar in response. Yet he kept trying. One time he even flirted with her right after she gave him a beating. 

He never made a move on the good girl who also lived in the same house. Not the two other guys living in that house either. 

I miss sims like that, who really have personality and do entertaining things on their own, that seemingly no other sim would do.