Buy a product only based on what it does now
Crap! What a load of bollocks.
Lets just get this in perspective.
To date, all iPhone OS updates have been free of charge and applicable to all of the iPhone hardware. Apple churned out three distinct versions of their OS X for each device. Thank you very much.
Since the launch of the iPhone all of the nay-sayers have had their knickers in a right old twist. They've hailed S.J. as the great Satan himself, Apple as a latter-day Hades and the iPhone as the Devil's own semen or somesuch. And so as each and every manufacturer pushed out their own touchscreen Phone it was hailed as the next "iPhone killer".
So the expectation is established - that all of these modern touchscreen smartphones would be at least on a par, if not better than, the iPhone. And that would also set the expectation of OS updates to improve and develop the handset over time. There is also an expectation that such a handset would not be wholly obsolete within the first six months of its life!
Android-based handsets are no exception, and even they are hailed as the next "iPhone killer", although one has yet to actually achieve that state.
Personally, I wouldn't touch a Samsung phone with the proverbial barge-pole, not even with the shitty end of a stick. Their customer support for their handsets is pathetic. Why would anyone expect Samsung, of all, to support the Android community with updates to it's handsets? This is normal Samsung behavior.
If their Galaxy was a sub £100 device SIM-free then maybe this kind of "disposable" culture would be acceptible, if not entirely green. But it is not, I note that in the UK it is still priced between £350 and £400. So we're not looking at a commodity-priced device, this is premium product and so the expectation of support for it is not misplaced at all.
Basically it is a case of a massive but not unexpected #fail for Samsung in general and their Galaxy handset in particular. Expect exactly the same with their Android handsets that follow the Galaxy. Like others, I always advise to stay away from Samsung mobile handsets at all costs.