Do you even look at the transaction fee for sending bitcoin?
If you send some bitcoin to your gambling platform, you are quite still unsure if you will be wining the game or not.
Its doesn't make any sense wasting all that money on transfer and playing and still fail.
So I think altcoins are the best option for gambling, because of the less transaction fee.
Agreed, we have to spend more than $25 for transaction fee if we are using bitcoin to gamble. It is not small amount for some gambler including me, while in fact I can use that $25 for gamble instead of to pay the fee. So using altcoin is the best option to gamble now, recently I prefer to use dogecoin because I need to spend less than 5 doge for the transaction fee.
Hopefully all the bitcoin network problem will back to normal again so we do not need to spend so many dollars just for the transaction fee.