Bluetooth headphones give me the shits.
They need power to run.
The need for power means they’re heavier.
Sound quality wise, the bit rates they can run on nowadays imply they cannot handle audiophile grade throughput (although they should be able to handle Spotify rates; at the same time, new Bluetooth standards do cater for improved speeds).
Indeed, now that I have tried myself a cheap $20 pair of Bluetooth headphones I bought off eBay, it has become clear to me that barring some sort of a miracle I will not be purchasing any type of wired headphones anymore.