Yes, I agree that from a passengers perspective, that the way they are treated during the flight either will make or break it for their inflight experience.
I always try to make every flight I work an enjoyable experience.
It begins with the behind the scene of preparing the aircraft for departure. I ensure that the cabin is tidy,(we all know that contract cleaners are not always efficient)I try to have all pillows in a uniform look, placed on each aisle seat,(not wedged between the seatbacks-giving the appearance of the KKK! eeks) all blankets folded and placed in one central location,(not thrown in a ball in the overhead) all seatbacks are in their upright position along with seatbelts crossed. This is done on every flight I work regardless of time btwn flights.
By having the cabin look pristine, it not only will give the passengers a pleasant first impression but a start to possible enjoyable inflight experience.
Now join that with a smile and a friendly hello to every passenger that steps on the aircraft (even when you say hello, welcome aboard and they pass by without even acknowledging you) will show that you care about how their inflight experience will transpire.
If we all just take a few extra minutes to prepare and give it an extra effort, we can help turn things around to make this airline one we can take pride in. That is one reason the "I make US fly" campaign was created.