Personally I really do find the sound quality to be quite good on the AirPods. When I'm at home I'm often using a much more expensive pair of open Beyerdynamic headphones so it's not like I haven't experienced high quality sound, though I wouldn't consider myself an audiophile.
This is another good point. Quality headphones are rarely bluetooth. I have a nice pair of Sennheisers. They do not come in bluetooth. And yes, I use them with my phone at work.
I thought the AirPods sounded like ass when I first started using them but after 2 weeks of using them every day for hours on end, they've really broken in and they have great range and separation. They don't have a great seal but I don't consider that a negative for what I use them for.