Vent - Rude Wait Staff?

Multiple people including myself have encountered an interesting phenomenon at restaurants lately. It seems that the waiter/waitress feels like it is in their job description to join in and interrupt your conversation while they wait on you. It is one thing to ask if I want more tea but for the wait staff to enter my conversation and overstay their welcome by participating in my table mates and my conversation. What is going on? Can't a waiter/waitress just take my order, check on me, bring my food and give me the check? I don't need their advice, I don't need their friendship...I just need my food! So this is my vent for the day.