Have you met Americans? We are addicted to comfort. You will certainly get cleaner using a bidet but a jet a cold water spraying your rear end seems like it would be quite uncomfortable. Caveat, like most Americans I have not tried it.
It's really not that uncomfortable at all. Buy one on Amazon and try it, they're 20 bucks and take 5 minutes to install with no tools. That's less than one package of Costco toilet paper these days.
So far as I know, I've been an American for the ~50 decades I've been on this planet, and I'd say ~85% of the people I interact with on a day to day basis were born in America. I've observed that it is a common American trait to form strongly held views about things where one has no experience, and to defend those views fiercely. The Dude said it best.
