Being a tubalub most of my life at nearly 360 (I've gone down a considerable amount for my height in the past decade, but I'm climbing back up - im old and tired) I always viewed suspenders as admitting defeat or a sign of getting old. I understand that my opinion is completely biased and most likely wrong on this, but it just is what it is (kind of like how I view t-shirts as strictly undershirts unless you're out doing something athletic).
Overalls as a piece of fashion never appealed to me, but for painting or working in the garage they've been amazingly important. Front pockets, easy to slip on over shorts or pants, never have to worry if I get grease or paint or shit all over them. The only problem is having to dump them off in a coin laundromat so I don't fuck up my washer and dryer, but that's a small prize to pay.