Hi Brian, didn't mean to have a go at you personally. Apologies if it came across that way. I acknowledge you stated it was "one reason" to upgrade but given the cost to change one set of bearings it's not compelling for me. As mentioned, my comment also referred to another post on another "bearing" topic on this forum. In hindsight, I should have made my post there.
It said - "If you have a 2012, 2013 or 2014 and are having issues with little things, instead of trying to replace all these little things one by one, it might cost less in the long run to upgrade to a 2015 or new 2016 bike." Since a replacement of OEM bearings is cheap and you only do it once (after that you should have the same quality bearing as any other motorcycle), I believe it's a minor reason at best.
I can't speak about the 2012 or 2013 bikes (as I have a 2014 SR) but I doubt there are enough "little issues" in the 2014 bikes to justify spending anywhere near USD10,000+ or AUD20,000+ on a new bike!
There are "big issues" in the 2014 with suspension, motor etc but even then it's still difficult to justify upgrading every 2-3 years especially when the resale value on Zeros (like other motorcycles) is pretty low (at least in Australia where a new AUD25,000 SR sells for AUD15,000 after 1 year and AUD10,000 after 2 years).
Apologies for the hijack, back to the bearing discussion ...