Soldato
For housing, I'd imagine it's a way for people who can't get a mortgage or buy their dream property to get on the ladder or own what they want. Plus as opposed to say the lottery or whatever in relative terms you have a higher chance of actually winning the prize. It's 500,000/1 against for that house versus the lotto, which is 10s of millions against. Both still astronomical odds but for me, I would see it as a potential reason. Then you could still sell the prop and end up with a substantial amount of money