Work provided me with a iPhone 4S when they were new. It has received regular updates and I have had no reason to upgrade the phone as it is really my portable email/phone-call machine.
My last personal phone was a HTC, which I loved as a tool. . 3 years later and never an OS upgrade received. Time came to update my personal phone and HTC, as much as I loved it when new, did not get any of my money. If HTC had provided updates, I would still be a customer now.