Mkultra, The reality about this is there's no competition between a 20yr old and a 40 yr old. Number one we're past the "having babies" stage so we have more than 75% of our energies to devote to a guy!!! (lucky them!!!), we're more secure, more confident, certain of ourselves, have more wisdom, more money, often healther, more experience in the sack... sheesh what can be BETTER then all that???!!!!
BTW, Sorry dog, I just want to share one thing with you. I have met a surpising amount of people who have divorced and then a few years later remarried. I can't say that would happen in your case, but it's not as rare or unusual as you would think. Hang in there buddy. Keep to the high road (you will always know you did your best to keep it together), and always behave in a manner so she will look back at some point and realize she gave up the best thing she ever had....
There is no arriving, ever. It is all a continual becoming.