I fly every three months usually and have done so for years. The level of courtesy (if you can call it that) has declined to the point that they throw the door open and let you board the plane. After that it's a fend for yourself mentality. No meals, no service, and no smiles. I had a flight attendant get angry with me because I asked for more than one bag of peanuts for three people. I asked for a pillow as well, it sent her over the edge. She walked to the front of the plane and began to lecture people about the limited service they were entitled to receive. I never flew with that airline again. I think we should be more attentive to how we treat the people around us. Being a good neighbor seems to have gone to hell in a handbasket.
You should tell us which airline that was. I'd rather not give it any more of my money either.
I flew Delta and KAL last year on the same trip, both airlines both ways. The difference was large. The KAL staff greets you as you board. If you ask for more snacks (pretty good selection of GOOD snacks) the stew rushes them to you and asks if you need something to drink. The meals are high quality. When you debark the entire crew is lined up to thank you and hope you enjoyed your flight.