Ok, I just thought it was strange and so out of character for you. A fling is one thing - but you had written that you were looking for more (I thought) and sure didn't think someone so much less mature than you would ever fit the bill.
I remember having a pretty good idea of what I was looking for and younger wasn't it. But younger is what I got. I figured I wanted someone with kids so they'd understand my life better. But nope - got someone without kids. And I figured I wanted someone to be about my intellectual equal but no - I got someone much more educated than myself. The key - he doesn't flaunt it and I can beat him at Scrabble. He also tells me that education and intelligence are 2 very different things.
The thing is - in my humble opinion - you have to meet people to understand them in a 3 dimensional way. There is far more to anyone that any dating site can possibly tell you. You know the old adage "you have to date a lot of frogs in order to meet your prince". Well - I think that is true.
I think the dating sites are merely ways of finding possibilities but I have to agree - the sooner you meet them in real life - the better - as emailing can create a false sense of who they really are.