Yes. The house edge will win at last.
Yes, agreed. It is -EV for the gamblers.
It certainly is, but for those lucky people who go on a lucky streak and quit before that streak ends, they don't lose. You have to be lucky and know when to stop if you want to Gamble.
Martiangle will just delay your loss for some time.
Keep in mind, even if you are lucky enough to find and bet on a neutral or positive expected value gambling site that is still provably fair, if you use martingale, you are bound to bust from a rape streak, unless you have both infinite bankroll and the house accepts any bet size of any size.
If you have a bankroll that can cover 30 losses in a row, with martingale, I can assume you are okay. I'm saying okay. Not safe, there have been instances where I myself have bet on 90% win chance, and lost 5 times in a row. 30 losses in a row is okay. To be totally safe, maybe 50 times in a row would be sufficient. Even then, that's
5,629,499.5 bitcoin. Err, that's pretty much a third of all bitcoin in existence. If I had that much bitcoin, I wouldn't Gamble at all.
Luck is also important.
Indeed. After all, it's called gambling!
Luck, knowledge, self control and wealth is the key, friends.