This is my first time seeing that acronym, however I will have to say that never happened to me, for most of the time I have been only interested in bitcoin, now there was a time in 2017 in which I got interested in altcoins as well but since then after losing a little bit of money I simple went back to bitcoin and since then I have not looked back, so unfortunately, or fortunately I do not know anymore, I have never experienced JOMO during my whole time in this market.
Yep, I experienced it in 2018 when I bought a number of altcoins at a price of $2-$3 per coin to hold on to for the long term. But in reality I had to experience JOMO and the altcoin never again reached its ATH to this day. I had to sell all those altcoins even when I had to bear a loss of $2 per coin, it was a unique experience at the beginning of my introduction to cryptocurrency. But we can certainly have different things with bitcoin where over time we have experienced historic times with impressive price increases.
However, anyone who bought at ATH last December, today they experience JOMO for their investment. But given the good potential in the future, they must be patient to see a bigger improvement in the next 1-5 years.