I am single at the moment, and I both love it, and hate it at the same time, and for me the reasons are simple.
When I am single I have the freedom to do what I like, without having to answer to anyone. I also have more time to devote entirely to me and my children, and I am not burdened with the common stresses that come with a relationship. This is what I love about it.
What I hate is the feeling of being lonely, not having someone to regularly share intimacy with, not having someone to spend time with, not feeling like I have a "side kick", not having a lovely meal cooked for me once in a while lol.
As with anything, there are positive, and negative aspects that come with being in a relationship, or being single. Most of the time, I think I would rather be in a relationship, but patience is a virtue, and I don't believe we should rush things such as relationships.
I hope this helps answer your question :)