I dont know where you are emotionally- I know that 20 yrs is a VERY LONG TIME-
I find myself after 6 yrs, wanting to wait a while before I get mixed up w/ someone else- Sure I miss the creature comforts and what have you, but this is my time o rebuild myself.
Maybe take a break from the online thing- I'm 33 and tried my hand at it a few months ago to stay busy- I didnt get any replies either...plus from what I hear from some women I know at work on those things- they pretty much are looking for a free meal- maybe not everyone, but these women told me thats all they were looking for.