I've always found service in restaurants in the US makes me rather uncomfortable - I don't want people acting so servile.

I remember being particularly unhappy about being served breakfast in Houston while I was there for a conference and being referred to as "sir" - I almost asked the waitress to stop but I realised that would probably cause even more problems so I stayed quiet.

So I would reject the idea that the service in US restaurants is somehow fundamentally "better" than elsewhere - it's just different and some of us actually regard that style of service as a negative.