Even deferring updates is not really good about being in your face enough about having a pending update ready, so eventually it's going to update by itself anyway.

Regarding switching to Mac, it never ceases to amaze me all of my colleagues who opted for a company Mac when all the productivity tools they need run natively on Windows, and sometimes not on Mac at all. So they set up a Windows partition which is never big enough and they always have problems with. Their choice was purely out of fan-boyism, and they all regret it.