Rude to service staff

I don't remember that I have ever been rude to service staff wether in hotels, restaurants, cafes or stores. I sometimes have my bad mood days but I never take out my anger on them, it's horrible and I hate it when people do that! and it's very awkward for me to go out with someone who does such things.  Thankfully my parents are very nice with service staff and they have always taught my sisters and I to be so, but evidently not everyone is like that,

A couple of months ago I was in b+f OFK in 360 where everyone knows has the sweetest staff in the whole world, my napkin fell on the floor beside my table so I just immediately picked it up and a waiter that was close by and holding a lot of trays in his hands came to my side of the table to thank me saying that i'm so nice and that not all customers do that, which is kind of weird because its not a hard thing to do and it's not 3aib and if you can do something to help them with their job why not just do it? People should be nicer and more patient with staff, it's annoying and it makes you look bad! if I ever see you being rude to service staff I will hate you and will forever think that you are an ass.