I think “survival” is an improper goal for a Christian. We are supposed to be “dead” already, having surrendered all this stuff anyway. I do think that “working with your hands so that you may have something to share with those in need” is a proper goal for myself, though.
Uh, no. You can neither preach the Gospel nor perform acts of charity when you’re dead. You are largely useless to God when you’re dead, though I’m sure He’d like to have the fellowship and praise. In a martyrdom situation, you may be worth more to God dead than alive. But survivalist scenarios rarely involve persecution of Christians.
If God wanted you dead, believe me, you’d be dead. Ergo, God wants you alive.