Same as was gambling
Many in here seem to have been caught up in it, spending far too much of their money on something. Partially to get the dopamine rush of buying more coin, and partially to satisfy their gambling lust hoping to score big.
It is no different than the people gambling their savings away on the roulette. Right now we are at the point where they have entered the casino and have been lucky, so they are up more money than they came. But instead of quitting while they are ahead they genuinely believe that their luck continues.
In the end it ends bad.
Bitcoin is not like heroin, cocaine or any drugs because bitcoin cannot harm our health unlike those things. Bitcoin is some sort of a game, in which luck is needed but not so much appreciated if we only just think. The only problem of some people got addicted on gambling is that they never learn to quit, and we shouldn't care for them, it is their own choice. We lived with our own different perspective of wining in life, so mind yours. And bitcoin doesn't make them an addict, it is the game and them itself who makes them an addict.