Me = big fingers = really really hard time using the keyboard
But I also find that I don't use it as much to type things as I did on older smartphones, so it doesn't matter that much. I have had the iPhone since day 1 and no amount of practice and training have in any way improved my typing speed on the iPhone...with the Blackjack, I was getting about 45 wpm. On the iPhone, the best I can get is about 20 wpm WITH many mistakes...
If I hunt and peck and go slowly, I get good accuracy of course - but it also takes 8 times as long to type something in than on past phones.
Still, I don't find the typing issue to be that big -- slows me down, yes, inaccurate, yes, but usable, yes. Just don't look to the iPHone as a blackberry or blackjack replacement for those who need to text all day long.