I don't really understand why people travel and expect everything to be just like home. The whole point of travelling (imho) is to experience the way people live in a place that is not like home.
Before I came to live in the States, I'd be one of those people doing eye-rolls at American tourists, wanting to know where the nearest McDonald's was to get a burger, and needing to have everything supersized.
For entertainment, watch the movie "Super Size Me!".
You could always pick out the Americans at the hiking lodge because everyone was dressed in REI/Patagonia/LL Bean, and some of the tags were even still on. Performance clothing is everything.
Having lived in the States, now, for 26 years, yes, everything in Europe now seems small, where it used to feel normal. I still don't eat McDonald's burgers, and I hope I don't take my flat sheet and extra pillows to Europe, next time I go, and I hope I don't get upset when I visit my cousins in England with the older homes with the leaky radiators, and the "airing cupboard" for drying clothes.
Having grown up in South Africa, where the supermarket only had a couple of different brands of an item, the thing which boggled my mind the most was walking into an American supermarket where there are 20 or more different brands of the same item.
There's also a "sameness" when travelling inside the US. Every mall or shopping center has the same cookie-cutter chain stores with the same appearance, signage and interior layout, every chain hotel has the same menu, and "downtown" is always a bunch of skyscrapers crammed together in a very small area.
I used to travel a lot on business - I've probably been in 100 US cities in 30-some states. If signs on highways and in airports didn't constantly remind you what city you were in, you'd often never be able to tell.