22 is too young. From a purely clinical point of view your brain isn’t done maturing and you haven’t hit the prime years of your life.
But there is no option in the US for male birth control and there is a chance that the vasectomy can be reverse, so do what you think you need t so. It’s not a chance I would take though.
I don’t buy civ games until they release all the DLC. Since CIV 5 it seems like they have released unfinished games that lack major game mechanics on launch and the game only gets finished through DLC.
Poor adoption and sales with CIV 7 is their own fault. They have conditioned the market to wait for the DLC.