Okay. <Scratching chin while thinking >
Yours is an IF, so mine will be an IF.
We know human nature is " all about me". So I don't believe that many would do your 'IF'..not without some 'pay off' at the end, why would they?
For me personally. If we still had the bible with no heaven or hell in it.
(
gosh what am I talking about, I already don't believe in 'hell' as taught in the pulpits!! 
)
Then IF God spoke to us just as He does now...then having His companionship, and His peace in my heart ..compared to what I had before I knew Him....then, yes it would be worth it ,to walk my years on this earth..in fellowship with Him.
But, I did say in my first post...that I may change my mind.