For me it’s the paranoia surrounding webcams. People outright refuse to own one and I understand, until they go on and on about how they’re being spied. Here’s the secret - unplug the damn thing when you think you won’t use it or haven’t used it in a while.
They, whoever it is, can’t really spy on you on something that’s already off and unplugged!
I have Bluetooth headphones that crack open when they hit a hard surface (have surviveed so far) and the battery is a little Li-Ion pouch on soldered wires. They probably don’t last as long as sealed ones of the same size but it’s very easy to find and install a replacement battery. Just check disassembly guides before buying.