Daimao didn't choose, he's literally evil incarnate.
Cell doesn't rape people, be serious. He was designed to kill and dominate.
Buu was a magical creation that was designed for evil purposes.
When?
Vegeta only did out of purely selfish reasons. I bet Freeza would do the same in that position. Unless you're talking about Buu, in which case it's not fair to make that comparison, as circumstances never lead to Freeza having to join the z-gang like Vegeta.
Filler. Also, the saiyans were assholes and, going by filler, had just made an attempt on his life.
Really? You think Bardock's pathetic attempt on his life was justification for destroying a whole planet? What did he have to fear from an ant? It's not like Freeza's reasons for destroying it were legit, he was insecure that one of them would rise of and kill him. Well, the two frames of Bardock does lead me to believe that it happened in a similar fashion to the TV special. Of course the Saiyans are assholes, but I don't see your point.
Yes, caring for Vegeta's family was selfish of him. I don't see what the problem is. Circumstances didn't lead him to joining the Z Team, it was Vegeta himself.
Vegeta did love his family, eventually, and not in the tribalist way.
The biggest truths aren't original. The truth is ketchup. It's Jim Belushi. Its job isn't to blow our minds. It's to be within reach.
"You miss 100% of the shots you don't take - Wayne Gretzky" - Michael Scott
Happiness is climate, not weather.