> Why wait a month or two?

Because I have just about enough left in me, and by then, in the UK we will have vaccinated the groups which make up ~99% of preventable mortality.

At that point, the moral argument of "go outside and you're putting people at risk" completely falls apart in my view.

If there are variants which escape the vaccines, then at that point it's game over since I know I definitely won't be able to make it through another year.