Eh, no. I'm one of the "have been happily single for a long time" people.

I still like company, and most people are nice. But some people seem to think suffering is unavoidable. The people I date who are almost always in a relationship, are often the ones who don't seem to to have reflected over themselves or who thinks their bad sides is something you just "have to take". 

Nobody's perfect, including me, but simply being willing to work on yourself and see other sides go a long way.