I actually got into this discussion this past weekend....
I think it all depends. Yes, I'd love to be in a relationship, because I think that each relationship teaches you something that you might not learn without having that connection with that person. However, being single has its benefits, too. My mindset right now is that I'd prefer being in a relationship, but it has to be with a person that I respect and who respects me as well.
*The guy I was talking about this with last weekend is of the mindset that it's always better to be single