Indeed, if you don't like the features the iPhone offers, or the iPad or any device really, then don't buy it.
Re iPad ram mostly I want more to avoid the refreshing of webpages. I usually like to have a few tabs going at once, but once you get more than a couple of tabs open when you switch between them the pages have to be reloaded. Which kinda sucks, because half the reason I'm switching between pages is waiting for them to load.
Re 16 and 32 gb, it would be nice to have more but I seem to get by quite well with several thousand photos and hundreds of songs just fine. Again, if it doesn't meet your storage requirements, don't buy it.