There are lots of reasons tro retire an airliner. Mostly the number of pressure cycles it has climbing to altitude and returning.
Still a 28 year old plane sitting for 3 years in N.M. desert (for 31 total) never should have been in the air. Maintainance anyone? Remember Adam air? [Phillipines]...
I can understand the fixation on the younger woman .... but would it not be better to seek a cougar whose kids are grown and gone? Look at it this was, if those aren't your kids, you'll always be in second place in her heart.
Good luck