42?

Meaning of life? What we here for?
This started off as a bbm conversation with a friend, who is narked with things going in their life.
Minor things which can be changed, with perseverance.
I did the platitude remarks,went probably into " mother mode" and said things to jolly them along and snap out of their black mood.
They aren't alone, ok they are thousands of miles away from family and friends, but they've people that care for them here and they aren't alone.

Then I was fine, felt helpful and the just have gone on with whatever they had and their life, and conversation ceased.

But a few hours later it had me thinking...
Why are we here?
What is my purpose?
I am beginning to think I've not got one.
Look after mother and then be taken for granted by friends( not all I add but just now feels like the ones that don't are in minority) definitely by family, and by work sometimes.
What has life got in store for me?
I tell you how I feel tonight there isn't much going for it, and sorry it isn't 42!
Am I destined to feel this lonely?
I'm now a the stage that when I go back for the stroke review etc that I might ask to be put back on some meds to help mood swings as I cannot just now cope.
This isn't a movie, I don't feel there's a happy ending, if I just hang on in there.