Oh yes. I get attached to my sims when I'm playing them. I've never been able to kill a sim off without feeling awful about it. I also get irritated when a sim I'm fond of rolls wishes that make me disappointed in them, like wanting to quit the job associated with a lifetime wish, or to no longer be friends with their child (and I mean child age sim, not adult or surly teenager) when they don't even have the evil, mean-spirited, or dislikes children traits. Or a sim who is happily in love and in a relationship or marriage rolling wishes to learn the sign of someone they just met, or to kiss one of their friends, when they don't have any traits that should trigger it like flirty or commitment issues. I'm there going, no, stop, you don't mean that! I thought better of you! (The worst example being a happily married sim with a new baby traveling alone to the future and then rolling a wish to kiss a plumbot he met. No. Just... no. Bad sim.)