Married twenty four years, now wondering: Should I stay or Should I go?

I have been married for over 24 years, and for the first 15 years everything was perfect.

My wife and I were a perfect match in almost everything we did and believed. I helped raise her son from a previous marriage and she helped raise my 2 kids whom I got custody for after a 4 year court battle.

We were especially well matched in the bedroom, both of us having very strong sex drives.

After 7 years of marriage, we had a surprise baby who still lives with us and is 17. It only helped to solidify our marriage and has kept us young.

Now I find myself thinking daily about leaving. I know life, love and marriage is about much more than just sex, yes once again a man with a sex complaint but wait, this one is different!

About 8-10 years ago my wife basically took her body away from me. She will no longer allow me to enjoy her body beyond basic intercourse. She still does everything a man could want but doesn't understand that the need to have her unconditionally is a major part of being satisfied as a man.

She refuses to talk about it, told me she wouldn't leave me if I had an affair, and warned me to wear protection! I have never cheated on her and can't believe she is serious. I have tried for years to get her to talk about it and understand that she is not living up to the promise that we made each other 24 years ago that we would always totally satisfy each other and never need to look elsewhere.

I am lost and with each passing day, week, year, I become more interested in looking elsewhere. I don't know what to do...?