I've only had one SO in my entire life. I was so deeply in love with her, but she had several mental health issues that made it really difficult and traumatic. Imagine a relationship in which one is not ready to have said relationship, and the other has no experience whatsoever in relationships. It was total chaos, and ended pretty badly.
Before this relationship I was completely obsessed with having a soul mate. I was constantly depressed because I wasn't able to find a partner,.because there was nobody I was interested in to begin with.I thought I was broken. Turns out that, while I am able to have romantic feelings, I fall somewhere in the asexual spectrum. This means I actually don't have any interest in anybody, unless I get to know that person and fall in love with them. But this has happened just two or three times in my life.
Right now, after my failed relationship, I've come to terms with the fact that I don't really need , nor want, to be with anybody to be happy. Just like some of you, I appreciate my alone time and being "free", not having any sentimental responsibility... So that's why I'm single; because I want to.