I think on both sides of the fence there is a fear of vulnerability after last relationships.
oh for me it's way more than that! Vulnerability is just the tip of the iceberg.There's expectations I don't want put on me, and baggage I don't want to deal with. There's extraneous friends and relations who always have opinions and guess what, I'm not interested in those either.
Every time I think I might be ready to date ... I think about it some more and say, 'Nah, I'm good!"