We flew from Rhode Island to Tampa. I didn’t see a single smile from any of the staff.
If I had to live in Providence or Tampa, I wouldn't be smiling either.
I fly Southwest all the time. Cheap prices, easiest and most efficient boarding of any airline, and almost always on time (or early). Their newer planes (737-800) are reasonably comfortable (at least no worse than any flown by United, American or any of the "major" airlines) and are wi-fi equipped. Southwest now serves decent beer in flight (Fat Tire). Their frequent flier program is vastly superior to United's (on which I had accumulated well over 200 K miles).
So, it's all relative. One man's disaster airline is another man's heaven.