I have 5 friends who own, and they have all had help from their parents (as in, deposits). I doubt any of them would now own a house, if it wasn't for the parental assistance. It will be a long, long time before DP and I can buy a house - he works (mostly) freelance, and I was made redundant last year, am working again, but still getting back on our feet. My parents could afford to help us out with a deposit, but they definitely will not - they were both brought up poor, earned every penny of their money themselves, and believe in working your arse off to achieve.
I don't have a problem with this (despite being mildly envious of the friends who have had help buying houses). My folks are happy to bring us on holiday, buy us Christmas gifts, etc (as they are luxuries, which my parents can now afford), but they firmly believe in making your own way, etc. DP and I rent, which has it's own benefits - if the washing machine floods, if the oven goes tits up, the landlord fixes it. If we do ever buy, it will be through saving our own butts off. I'm glad my folks now have money to enjoy themselves (and treat us, as they wish), but I would never expect them to help us buy a home. They would never dream of doing so, anyway.