Uncle Jessie we get it, you're gay, stop being so defensive. The only cats walking around in the lockeroom and going to urinals naked (with no sandals...foul) is you old flabby white gray haired crypt keepin' no dick muthafu*kas. Yeah, its totally normal to blow dry your prune sack in front of everybody keep telling yourself that...
Let's just say you have a different view of this then I have. I am not being defensive. At least at the gym where I workout which is actually a fairly red-neck suburban, privately owned family friendly gym with a varied membership as to age (all ages from 15 to 80), some guys are fairly modest and change in the curtained cubicles and some could care less about being naked in front of anyone, regardless of age. There are dads with their kids, young guys, old guys, fat guys, skinny guys and guys who are built.
In contrast, I have worked out at gyms like 24 hour fitness where the locker rooms are ridiculously cruisey with guys obviously checking other guys out. Those places are creepy, IMO. If someone was clearly acting weird in the locker room at the gym I go to, they'd probably get called out or punched.
Personally, I think your description of me is hilarious! I do wear flip flops if I am going to walk around as you say. I am old, but I hope I don't resemble the image you imagined....naked or otherwise. You too will be old someday and I hope you look as good as I do. Keep going to the gym and you might.