Okay. So let's get straight into it. This anime is not normal. it's not supposed to be. You can't expect an anime about a woman who finds risk exciting, to be rational (at least most people shouldn't). It's all about the madness of the characters as they struggle on high stake gambling, just for the thrills of it. Money really doesn't matter to most of them.
That being said, I don't really get why some people criticise the anime for its crazy moments, when that's one of the reasons its so much fun. I mean, given my last point, you should've expected it'd be like that. If you didn't find all that madness appealing, you shouldn't have watched it in the first place. I read a little about the irrationality of the charachters and the show's overall madness before watching it, and got instantly thrilled by it. I watched it afterwards, and didn't regret it at all.
So, my point is, that it's not for everyone. But that doesn't mean you should hate on it because it's not your kind of show. Just skip it.
On the other hand, if you're like me and find madness and unpredictable characters appealing, definitely give it a try. It'll be a fun watch.