What do you do when you hate a sim you've created?

I always let my unwanted sims go into the wild, as it were. That is, I kick them out and let them be the next annoying NPC in the world. If they annoy me too much afterward they get the same treatment as any other annoying townie, which is most often naughty things that spellcasters can do, or using MCCC I might cheat an emotional death for them or just outright delete them.