I love my 3.5mm cables for this reason. No negotiating with vendors (except Apple but it's well known that they really suck) just plug and play.
Or the pain of switching between paired devices.
At least no more cables getting ripped out of my ears by the door knob.
So to answer your question I’ve had them for around 20 months.
And for price, $250AUD every 5 years is well within what I am willing to pay for the convenience of the airpods. I use them daily, I have them in my pocket always. Being able to quickly put them on and take a call and it all just works instantly is worth it to me.
I also have just not ever had in ear headphones ever last that long either. The cable always breaks within a few years max of usage.