Has anyone here ever made money gambling with BTC?
Do you mean the admin of the gambling site or the "player" ? Only a few people has made a lot of money on the gambling the site , but all know that at the end is only a question of luck (and the site will win at 99% of the times).
yes because gambling sites have the slogan "homeowners always wins"
so I always hesitate to make a profit much on gambling sites
Well yes of course thats how casinos make their money, if more people won than lost then they would not be in business anymore. Theres no guaranteed profit on gambling sites, however if you invest then there is a much more stable and in your favor profit.