Lol....had to laugh at your description of belly comparisons.
If it's any reassurance....I'm 58, had three kids, and through sheer good luck, have no stretch marks or scars. My belly looks great, but you know what? Not a single one of my post-divorce lovers have commented on it. They were all experienced men, who surely had had other lovers with less perfect bellies. And they all complimented me on other body parts. But were they impressed with my smooth perfect belly? Not a one! So I'm guessing that it's just not an issue most men care about - perhaps because they're too busy looking at our other assets??