Wow. If it was MY wife, I know what I would do... I still want to reconcile, and have not gone thru a D.
I guess it comes down to: Can you forgive her and work thru your anger? Will she D OM? Does she want it enough to work thru the issues that are her responsibility and make the necessary changes?
22 years is a long time to just throw away- it looks like you've got the opportunity to make it better than it was, IF you want it.
Good luck!
Me: 50; Wife: 48 Gay; civil union in NJ no kids M: 15 years, together 17 Bomb (OW) 2/09 (EA 3mos/PA 3mos) ILYBINILWY W out of house, w/OW, in separation talks, nothing filed