If I came to you and said we were going to play a game
We're going to take five dice and roll them. If they're anything besides five 6s, I'll give you $100. But if they ARE five 6s, you owe me $750,000.
Your expected value of playing this game with me is winning $3.54. So by that it's a good choice to play (assuming you can play it infinitely many times). But in a small sample size, the downside is so massive and the upside so relatively small, there's no way I would choose to play