Are our lives for the purpose of soul-making?

People tend to either think that their lives are purposeless in the sense of absurd, or that our existence is a process of "soul-making" -- that we're here to learn lessons and for our souls to thereby develop to become better and more enlightened beings. I used to think the latter, but now I reject this dichotomy.

Much of what we do in our lives we do purely for the experience. That might be something as trivial as having a good night out and getting pissed (i.e affected by alcohol). Have any lessons been learnt? Has our soul developed during that one night? Probably not, so why should it be any different for a whole life?

However, that's not to say our lives are purposeless. It is perfectly possible for there to be some ultimate purpose to our existence, some ultimate reason, without thinking that life is like school where we are required to progress to some specific end. What this ultimate purpose might be I don't know though. I'll leave it to those who have had mystical experiences to answer that one.