Don't blame gambling for your misfortune and instead of blaming it, why not try to ask yourself if you did the right thing? You did a mistake and it's wrong to blame gambling because of losing your bitcoin.
I think that is imperfection taking some activities and blame others for their own faults .In the First place gambling is not liable for any loss of money you spend as long as you have no problem with balance loss or anything bad happen to your account ,So if you wish to gamble you think first if you can afford that any amount and not to blame others for your faults its your own decision .
The house itself shouldn't be blame for our misfortune. We are gamblers and we know that we had the chance of losing, and if ever we lose it's a normal thing in gambling. But when we started to think that it's because of the house percentage then it's completely a wrong type of thinking.