People are satisfied because they need to justify their purchase. If the airpods costed much less, im sure we would have people complaining about audio quality and other minor issues, but when you pay that much you overlook the little things to justify your purchase.
Apple customers (and I am one) are, as a class, some of the most perfectionistic, whiny-if-it-isn't-just-right people I can name.
Consider the new MBP with the touchpad. It cost a lot. People—people who own the thing—routinely call it garbage, just because they lost their Fn keys.
Having owned Jaybirds Bluebuds and Airpods - I can say that without a doubt the number one selling feature is the convenience.
The pairing is seamless. Switching between phone and computer is fast. Most days I forget they're still there until the battery dies and I have to charge them. If it weren't for the price, I would get a second pair.
Airpods are just "well done." The audio quality is not exceptional, but everything else marks the definition of the new standard for bluetooth headphones.