What do girls mean by being single by strength?

Being single by strength, the buzzwords on the internet are actually a kind of ridicule. Because I have low emotional intelligence and don't understand amorous feelings, I have always been single, and I laugh at myself whether I am single by strength or single by ability.

Being single by strength is a word that many people like to ridicule themselves or their friends. Similar meanings include being single by strength, committing suicide and so on.