Okay, I have to admit it, when I was still gambling, I was there and answer an invite because I was looking for a way to earn bitcoin that time.. Other than profit, I have no other reasons why I am there, though I could say that I was having fun chatting with the people on the gambling site, so I think it's more of a profit than looking for fun...
Well, there's the fun there when you can chat with your fellow gamblers and I admire a gambling site who has a chatting features so even though we lose we can feel alive and we feel we are not just gambling alone.. A good site that has it is nitrogen for sports book while prime dice for dice and many others.