Well, that's your point of view. And I know it is not only yours - many many many people would agree. Current trend is "tú." I wonder if that would change eventually.

Older people don't want to be called as "Usted" when it's a friend, a family friend, or even an acquaintance. It is certainly shocking when a girl on her 20s says: "Señor, ¿qué hora tiene?" However, it is OK. "Disculpe, ¿qué hora tiene?"

And not only older perople, but even teenagers would be pleased when hearing: "¿A dónde quiere que le lleve?" or "¿Qué gusta ordenar?"