All these people claiming they never update their systems and have never had a problem is a bit like the people who say that they have smoked all their lives and haven't developed lung cancer.
You appear to overlook the point that updates appear, in reality, to be a continual source of problems.
Even the most reliable updater I have come across is quite capable of sending a message saying "Update now. It will only take a few minutes." and then leaving me sitting there for two hours wondering how it can take that long to update an anti-virus.
Things should not be that way, but out in the real world................