When I turned 16, I pretty much religiously got 1 line a week. I've never won more than £10. I stopped playing after a while, but something has made me start playing again. I haven't played it in about 2 months, but I keep meaning to.
There's a 1/14,000,000 chance of winning, but there is a chance of winning. I only spend £1, maybe £2 maximum, and anything I win from that is worth the chance. I only need to win it once.
What would I do with the winnings:
I'd learn to drive, get myself a decent car, buy myself a whole new wardrobe whilst avoiding items that are too expensive, get myself and my immediate family out of debt, give them a few thousand to keep them going for a while, put some into my godson's bank account, as well as his mother's.
I like to think I'd invest the rest of it.