Sensors (Gen 2) Spontaneously Just Dying

I love most of ring products, but is it me or do the door/window sensors simply stop working after awhile? I'm so frustrated that I actually have to keep spares just to replace failed devices. Even with the Gen 2, I've had to replace all my sensors within 6 months. Totally unacceptable. So between this issue, low res camera's compared to the competition, no POE for exterior camera's and no PTZ, and no NVR for those who want local storage makes me want to buy all new for our new home being built. I wish Ring would just start making more durable, professional-grade products.