My British wife can't stand the bread in the US. She says it tastes like cake (and her UK friends agree). The funny thing is British bread doesn't taste any less sweet to my American palate.

We tried about 6 different supermarket chains in the Irvine area, and the only one that reliably stored affordable good bread was Whole Foods. Weirdly all Americans told us Whole Foods was an expensive supermarket, but it was less expensive for our diet than the other supermarkets. Of course Irvine is an expensive area, so it could just be all supermarkets were relatively expensive.

I wouldn't judge a culture by their hotel breakfasts though. I don't think they match typical breakfasts basically anywhere. I don't think many hotels would serve you a breakfast burrito, but as far as I can tell that's basically a staple for many working Americans and it looks like it is actually quite healthy.

edit: to be clear, supermarkets in western europe have always stocked fresh bread for as long as I can remember, but in the past 10-15 years have also started stocking "artisanal" fresh bread. So they sell your pick of sourdough rye/wheat/spelt breads that have all been baked that morning.