The purpose of our lives?

Allah Subnaahahu wa ta'alaa tells us in the Holy Qur'an that he did not create mankind or the jinn except that they worship Him.

I guess this is what we've been created for, to worship God. When I first heard this, I was like "Hang about, our existence is only to worship God? That's it, no time off?" I had in my head the picture of being stuck on the prayer mat...indefinitely, and it was not a happy picture.

It was quite daunting actually, that the demand of the creator was that we should have no life and just be permanently in prostration upon the prayer mat. It seemed to me to be quite cruel.