Of course it isn’t my place to decide that. Everyone must decide things like that for themselves. If you read what I said, you should have noticed I didn’t even comment on the underground project. I don’t know enough about it to have much of an opinion, so my comment was more of a food for thought comment for like-minded Christians who know Christ is ruling and reigning all things right now at the right-hand of the Father.
I had a client, an atheist, who was a brilliant doctor involved in attempts to dramatically extend human life. Fifteen years ago he told me we were on the cusp of doubling our lifespans. He knew I was a Christian and we had spent time talking about our respective beliefs, so when he told me I would probably live to 150, I suggested his obsession was motivated by his fear of meeting the God he claimed didn’t exist. He laughed at the notion, but it was obvious it rattled him. I enjoyed his reaction.
When I made My earlier comment I had my old client in mind. I also had these Google loons who want to upload human brains. I had those who have themselves preserved cryogenically. “It is appointed unto men once to die, but after this the judgment.” No amount of burrowing or human engineering will ever change that!
That's the way I read it.
"If God is for us, who can be against us?" - surely.
But that doesn't mean I shouldn't "prepare" for "unusual" times before He returns - I think most of us understand that.
Of course, within reason - one shouldn't obsess on "Plan B" at the expense of all else....