As a consumer of electronics and computers for the last 20 years or so now, I can tell you that future proofing never pays off. If you don't need the space now, you don't need to pay for it. Just a waste of money. You never get that value back and you usually end up not using that extra upgrade either.
Think of the 64GB as having more cache. if you plan to play games, or download a lot of apps or have slow internet then you'll appreciate the added performance of the 64 GB as the OS controls the performance. I'll be getting the 64GB version because for only 50 bucks more it's a no brainer.
Wrong. Extra space does not increase performance. That is the job for RAM and the 64GB unit has the same amount of it. Also, you're not running a full OS on this thing so if you're in some intense app it will kick old apps out of memory.
Also, you'd be assuming that someone can even fill up a 32GB unit and thus have no free space for cache available. This is also fallacious as it will be very difficult to fill up a 32GB unit.
I will agree with you that $50 isn't a big deal. I personally went for the 32GB unit cause I'd rather spend that $50 on apps or a new apple watch strap. So going 64GB is fine, just don't delude yourself into thinking that you got a better performing unit. It's the same thing, just has more space. That's it.
As someone said. The limit per app is 200mb for initial download and then up to 2000mb more for a total of 2.2gb per Game/App. My current max size is 97mb. I think most iOS games are < 200mb but games for XBOX and PS4 or maybe 15-20gb and more. So I think in time really good games may start to approach 2.2gb limit. That means about 15 large games max fit 32gb. I am going with 64gb for all my boxes.
Yes, your calculations are sound but there is no evidence that any 2.2GB games are coming out. There might be a few here and there, but also it does not mean you have to or will even want to own them all.
Heck, a lot of console gamers don't even own 10+ games so being able to fit 15 is quite plenty assuming that each of the 15 happens to use the maximum space possible... which is highly unlikely.
That could potentially change in the future with a software upgrade though.
Yes, if caching ever comes here having more space will be good. However, 64GB isnt a ton of space either when it comes to storing 1080p videos in good quality. I believe iTunes movies tend to be around the 6-10GB mark each, which means even on your 64GB unit you could store maybe 5.
Not to mention that is a big and UNLIKELY if. Let's face it: if Apple intended for people to store stuff on here besides apps they would have released HD-based models.
And suppose for a minute they do start allowing you to store movies on it. Why would you need to? I am sure that everyone who is buying one of these has the connection needed to stream just fine. If your connection can't handle streaming you are probably not going to buy one until that function comes to being, in which case its a moot point at this time.
Mark my words; this time next year, when apps are increasingly sophisticated, and Apple hasn't released a yearly hardware update, people are going to wish they had 64gb.
Sure, Apps may grow in size but I don't think Netflix will go from 19MB to 800MB by next year, and YouTube won't go from 700KB to 1GB either. I can't imagine what kind of Apps (especially ones you would run from a TV) would require such massive storage.
The only thing I can think of is games, which I covered above.