Must say I tend to agree with Final 3's comments. I think many of us dont go out to come across deliberately rude (or appear to be so) but frankly the airport experience is for some of us not what it used to be and now we are actually just happy to get on board probably just relieved that the air operator is still flying and that we might just make the slot time allocated.
On a slightly different note your own attitude is very much appreciated - perhaps it would be nice if some of your colleagues in the trade also had the same courtesy - I would say 7 times out of 10 when boarding with a variety of operators the CC are busy chatting amongst themselves and shall we say not necessarily providing an in flight service to be proud of.
Nivsy