1) No, 2) Not unless it's something that interests me, 3) Yes, 4) Yes. For us non-survivalist types, it's all about costs (in time and effort as well as money) vs. benefits (better chance of survival in a disaster). I'm 72 and would prefer to spend most of the rest of my life doing things that interest me rather than attempting to max out my chances of physical survival under adverse circumstances. It's a trade-off each of us has to make. For me, 3) and 4) make sense (up to a point), 1) and 2) do not.