If you kill your inner child you've stopped living. I think a nerf war could be fun. I'm eyeballing some gas blowbacks to irritate the local squirrel population. *shrug*
If you enjoy it and it's not illegal, immoral, unethical, and doesn't harm anybody, ROCK ON!!!!
I would have included 'offend' in that list but, no matter what you do, it's going to offend somebody.