Addiction of everything is bad. Some sees cryptocurrency trading as a means of speculation. They become over enthusiastic. But I think the reason behind this addiction is same as one develops for gambling. Some people like gambling. They will always be same whether they trade in cryptos or stocks. This is not the fault of cryptos. This is the fault of greedy and obsessive behavior of these people.
Yeah, it's ppl who do it. The desire to win something more than what you put in is alluring.