I'm sorry but what does this have to do with Apple?
Well every other phone manufacturer makes several different form factors to please several different kinds of customers, but not Apple. They released one form factor and basically told everyone else to suck it. It's a really arrogant attitude. They argue that touchscreens are as good as hardware keyboards now, but of course the main reason they did it is because of the savings associated with having a single SKU and because of the marketing advantages that having a single form factor (especially one that looked like it teleported in from the future) would give them.
You could argue that the market proved Apple right, and the amount of people who buy their phones prove that it IS good enough for a substantial amount of people, but I would argue that a significant proportion of their customers buy them not with considerations of usability in mind but more because of fashion/style concerns. (Not saying it's not a good phone, just saying that a lot of its users don't care that it's a good phone!) As evidence for that statement I posit the persistent prevalence of BlackBerries among teens and young adults despite the fact that:
a. even though that age group should be the most "fashion conscious" customers, they're still buying BBs despite the fact that they're business phones, so while people in their 30s might sorta like their understated designs, they have absolutely no "cool factor" whatsoever, and
b. they're more expensive to own since most providers charge extra for BBS services like BBM.
So, no, touchscreens aren't good enough for most people to type on. Some people are prepared to put up with them because they either don't do a lot of typing or because style is more important to them than usability. But the reason I made a dig at Apple is because they were the first to say "we'll go after only one segment of the consumer market, and force everyone else to conform to it through fashion and peer pressure". And that's not on. I want a choice, and it pains me that most other companies are heading in the same direction, sticking to fewer and fewer form factors. Even HTC, who used to be the kings of hardware keyboards, haven't released a QWERTY phone in about a year now.