I've used a single MacBook Pro for all my work for the last 10 or so years with no problems. I highly doubt this is the reason. Plus, if you have 3 devices and

I've used a single MacBook Pro for all my work for the last 10 or so years with no problems. I highly doubt this is the reason. Plus, if you have 3 devices and extend their lifetime by 3x, it's the same as having 1 device which gets replaced more often ;)