Is it right to close this question as a duplicate:
I can see that its title (i.e. "meaning of life") is similar to some previous titles (i.e. "What is the meaning and/or purpose of life?" and "Impermanence, nonexistance of self, meaning of life").
But I think this question's is not a very good title, and that the content of this question is different: I think this question is asking, "Why do there seem to be two different goals (e.g. Nirvana, and favourable rebirth)?" -- which isn't the same as what the other questions were asking (and so I think this isn't a duplicate).
Perhaps we could reopen it, possibly change the title somehow?