DY
Actually its the other way around, Casinos are very classy and horse tracks are very seedy. Even if you have never been to one you must have passed by one.
If you go to Aqueduct, the casino part is very nice and the race track is seedy.
I also think it says somewhere in the Gemorah a gambler was invalid as an eid because he is taking money from someone else who doesnt really want to give it to him and frankly its also Genevas daas as gambling tricks people into thinking they will become rich instantly (The NY Lottos commericals)