I used to have Powerbeats 3 and these were hands down the worst headphones I have ever owned. They were great when they were functioning, but this didn't happen too often as they were super prone to sweat (sic!!!). It was really pathetic as I had mine replaced twice and both times ended up with the same issue, so finally decided to sell the last pair directly after I got it. After all this I saw that the review page of Powerbeats 3 on Apple website was (not anymore, Apple deleted all the comments when it modified color options of PB3...) full of outraged customers with the same issues which means that my case was not isolated and Apple just produced a lousy product and didn't really bother improving it over its lifetime. For headphones this expensive it is unacceptable. So, after this adventure I parted ways with Apple-made headphones and I'm not coming back for sure, but I do hope they managed to improve the design with these new ones.
I don’t know what you were doing to them, or if it was just bad luck. As mentioned above, been inning with mine for years now, never an issue. Likewise, tons of people on this thread have had great experience. They are, by far, the best running and exercise headphones out there.