Watch out, you'll be doing the Bob Ross thing of taking them in your house to raise them soon!
As for the kids thing, yeah, I know. I grew up as maybe you did. Gen X, parents kind of leaving us to fend for ourselves, kicked outside till dinner time so riding bikes all over the city with our friends. It was a different time. Now even the best of parents are often too scared of things they hear on the media to even consider letting their kids outside alone.
I'm not sure where kids pick up that urge to smash creatures, but they all seem to have it. With my kids I used it as a teaching experience, always reminding them to be kind to creatures, bugs, and nature itself like trees and "weeds". Even though my oldest has entered a phase where he's terrified of creatures, he still tries to be kind to them like I've taught. For example, if he sees a spider even a big one he will try to catch it to throw it outside instead of smashing it (I tell him to leave it alone actually and let it stay inside, but he's too scared to allow that right now).