I think this is due to pet deprivation. I have never once in my life had a pet. That makes me sad. My dad is allergic to cats, but he had loads of dogs growing up. So why do I get stuck with a deprived childhood? I think my mom vetoed pets because she figured she'd be the one to take care of it all the time.
I just think mice are cute, with their tiny brown faces peeking out at you before they run away and hide. My mom asks if I still think they're cute after they poop on my stuff. Yup! I don't care if they were on my computer desk. (I think they like computers because they have a mouse.) But it does bother me to see one stuck in a trap, still alive and wiggling to get free. I may be traumatized by that. Maybe I'll just teach the mice to do this:
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After all, they did manage to get peanut butter off one of our traps without springing it. ;)