Depends on the woman. My wife is 50+ and looks fantastic. I have a friend who is 50+ and is basically 4 weeks away from stage-ready for fitness all year long. They all aren't disgusting. You need to find the ones with good genes.
Madona, Elle McPherson, Halle berry, Naomi Campbell
All are over or near enough to 50....if you pick a very good looking woman who takes pride in her appeareance with good genes you'll be ok in old age. At 50 i don't think I could tolerate a girl in her 20s