Not idle questions. Actually quite important & of the moment. Absolutely on-target in our present circumstances. "A mind is a terrible thing to waste."
You think to yourself: "Surrounded by the stupid, the cruel, the insane can't be good for me." Yes, seems obvious that spending time with stunted, twisted and deeply unwell humans can be detrmental to one's well-being. Seems easy to sink into the black-mire of madness.
How to protect yourself? A cool detachment helps."In it, not of it." Remind yourself of what is actually important: truth, reality, gravity, kindess, intelligence, empathy, compassion, music, poetry, laughter, love, forgiveness, responsibility, humility, grace.
Be sure to plunge into doing the things you love to do, and do them as often as you can. Know that there are other humans, just like you, seeking a better way & better day.
A working thru. A certain discipline. A determined strength of mind. There is beauty & wonder to be found around every corner, but it's important to watch your every step, pay attention, and cherish the good.