No, that is not the reason for my comment.

It seems clear to me, both by life experience and reading related research that humans require meaning to have lives worth living. This might be a hard pill to swallow, but I suspect that it is ultimately our mortality that gives our lives meaning. If there is nothing to strive for, then there is only pleasure seeking. Your life becomes an infinitely long hedonistic binge. Human beings were not designed to withstand hedonistic binges for too long without dark consequences (as in, dissolution of meaning, extreme depression, etc).

I guess you could argue that with infinite time, you could figure out how to redesign yourself until you are comfortable with immortality. But are you still yourself by then? Or is this problem also already solved by... just dying?

You would be forever chasing the dopamine hit of understanding more of the fields that interest you. Or you could just shoot heroin. Without mortality or problems to confront, all meaning would be lost. Math, heroin, sex, all the same. Consider the dissolution of meaning, and the fact that infinity is a very very long time.