Gambling is not illegal and not necessary bad thing, if you can control yourself and not to become addict.
I learned my lesson and now I'm able to find balance between my virtual and real life.
If someone wants to visit gambling sites, they will find it, doesn't matter if I advertise it or not.
People have to learn how to control themselves.
I concur. As long as you do it for fun/relaxation/other reasons and it does not become your addiction it is fine. Anyone who says it is only bad is quite ignorant. Similar to online games, drinking, etc., it is fine if you can control yourself. You can't blame alcohol if you become an addict as you've willingly started drinking it. Similarly OP can't blame Bitcoin in this case either.