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.
Trading crypto can be enjoyable as long as the trader makes profits through his trade. This is not always the case because it is also time consuming and unhealthy to sit on a chair for the whole day and wait for the opportunity to make the next move. However, trading crypto is super risky and you can lose all of your profits in one shot which can be really painful for a trader.