We buy lottery tickets, not as regularly as when they first came out, but overall we have won more than we have spent. We've never won a large amount the most was £79, also a few £40ish and some tens, we are about £50 'in credit'.
Not sure I understand the comment about millionaires and 'nicer people', I think that most people just want extra money because it makes life easier, money worries play a huge part in general unhappiness. As they say 'money can't buy happiness' but it helps.....