That $1.5 billion sounds good to me...and I bet sounds good to everyone right now too.
When they say money can't buy happiness, they might be exaggerating a bit; it can buy happiness for a little while. It can make me happy when I want things and I can buy them without putting it aside for years (like lenses and cameras I am dying to try).
I don't know what I would buy with all that money. Probably just a better place to live at and help my family. I don't think I would develop addictions, I just wouldn't have to worry about much except that my family is comfortable.
I would, obviously, travel a bit more and invest a chunk load into my kids.
My kids futures are what I would save that money for.
I am a basic person when it comes to having money; my husband even jokes that I am the affordable wife and I could live off a cookie a day...and I can!
$1.5 billion dollars would not change me much except for the fact that I would sleep a bit more peacefully knowing we have money to survive for the rest of our lives.