For most of the time, for people like you and me, that kind of protection wouldn't be any good at all. Football pads don't help a whole lot in that kind of situation. You can protect yourself against some very specific kinds of situations. You can buy fire insurance, to protect yourself in case your house burns down. You can buy health insurance, in order to pay your hospital bills and your doctor bills, in case you get sick.
Some people keep guns in their houses, to protect themselves against burglars.
Or they put in locks and burglar alarms, which I think is a lot safer, since you can't shoot yourself by accident with those. But there's lots of things that you can't insure yourself against. And there's lots of things that you can't lock out. You can't lock out despair. And you can't lock out fear.