Almost all my dozen or so pairs of shoes and boots are leather and the only of these that I find true is that they’re not great for running. At least none of the ones I have.

If they fit poorly, you bought the wrong size or a pair made from a last that is very wrong for you. Ditto if they hurt your feet. Past a the first 3-4 wears of break-in neither of those should be true, they should fit and feel awesome. They’ll shrink if you soak them in water, and I mean soak, but even that’s usually not fatal to them, they’ll stretch back out. I have a beater pair of camp moccasins that I’ve straight-up walked down a waist-deep river in three times, and I regularly wear them for kayaking and briefly submerge them when getting in and out, and they still fit fine.

Also you don’t need to polish most of them. Hit ‘em with leather soap and conditioner a couple times a year if you want them to last a decade-plus, yes. Polish? That’s only necessary for certain types of shoes for certain purposes, and even then, you shouldn’t need to do it all the time or anything. I don’t put polish on any of mine.

(All this void if we’re talking reconstructed or fake leather like most of the “leather” shoes at the median Macy’s or other common department store, those are terrible, yeah)