<human>: Summarize the given text in a few sentences.

I know some cats LOVE going outside, however, I'm really having trouble understanding why owners allow cats to free roam outside.

Aside from the fact that if your cat gets hit by a car, it will be devastating to you, it will also be devastating to the person that ran the cat over, as well as all the people that saw it.

My gf called me the other day in tears because she saw a cat run out in the street (she said it looked like it was running from something) and get plowed by a car, then she got to see it convulse and flail around before dying. It makes it worse that it was the same breed and color as our 2 cats at home, it's just something you can't shake off and I suspect that imagery will be with her for quite some time. I just do not see the upside to letting your cats free roam.
<bot>: If you let your cat come and go as they please, not only are you risking an awful experience for you and your cat, you're risking ruining a lot of other people's day/week.