For those who have experienced profits from trading bitcoin and made it their main job, of course they won't get tired, I have a friend who trades bitcoin and altcoins, he seems to enjoy his work and has a lot of free time because trading on spot exchanges is of course very easy and you can set profit targets what you want to get.
I think that will never get tired guys who have been in cryptocurrencies for a long time are people who came in 2016, for example. these guys saw the dawn and collapse of ICO, they also saw how bounty hunter could earn $ 20,000 and in signature campaigns. In general, these are real enthusiasts of the crypto industry. Only those who wanted to get a net benefit from it, but at the same time failed, can leave the world of cryptocurrencies and forget about bitcoin. But BTC its not only about money, its a great Ideology.