There are carbon atoms splitting (decaying) inside of you right now. This is why carbon dating works. Do you notice them?
Yeah, unless the atom in question is neutronium, you won’t notice and if it is neutronium, you have all kinds of issues even without splitting it.
I get the instinct but that is why GrapheneOS only runs on Pixels. Pixels have hardware needed to verify you are running the genuine GrapheneOS. Still safer and cheaper to buy stock and spend 10 mins installing Graphene of course.
Except US citizens have to pay US taxes even when living abroad. Something that does not exist in most countries, because it’s as dumb as it sounds. Yes, they are taxed twice (by both countries).
Not unless you feel it all the time (and even if you do, the energy released is not enough to activate nerve endings).