Not mandatory, but I'd say a very desired feature. I myself have been into situations when I'd sell my crypto because I needed money, even though that was extremely unprofitable, plus the fees were high. I knew that wasn't time to sell and I wouldn't have done so if I was financially secured otherwise.
I've learned my lesson and now I only buy when I'm confident that in the nearest future I won't need that money and won't have to sell.
Nevertheless, one can make a profit from short-term returns with alts, or daily trading, I don't think financial stability plays such a big role in these cases.
Not all would really be having that kind of situation on where they do have always back up funds in case if things doesn't really tend to happen on what they had expected.
Even myself had put through situations like this on where I do need to sell on lose because I do really badly needing some funds for some personal reasons or emergencies on where it do
sucks when you do saw that theres some significant rise.
Situations like these are inevitable and cant really be avoided but if you do have funds allocated for such situations then I don't see for it to happen.
Worst things will only happen if you are not prepared for it. But if you have back ups aside from the capital you had invested, then you won't meet such situations like that. It's a good thing that we should not just depend much on our investments. It has no guarantee when will it create profits so better find a job that will sustain our basic and emergency needs.
Financial stability has nothing to do with the outcome of your investments. Although it has an edge but in the long run, its your skills and strategies will matter the most. As long as you won't sell in the dip, then you are not losing anyway.
Always set back-ups and its a must thing to be considered first before joining any investment because there's no such guarantee that you could make money and thats why preparing for something situation is a must.
Financial stability is not something that all people could have and some do invest with loan amounts because they do gamble out on something which they do seem to be worth to risk and if it did go well then
thats the time they do repay those loans.
I can say its risky but there are people who do really love to play with fire.