First sentence wound me up immediatly
WTF does using a finger or stylus have to do with a smartphone being a smartphone?
I assure you that in their time, Palm, Handspring, iPaq and many others were smart, and used stylii. They were smart because of what they could do, not how they did it. They still worked using rectangular icons arranged in a grid, with multiple pages and apps that used gestures rather than key presses. They could install software. They could do media, games, productivity applications, and they could interact with the outside world.
My Treo functioned perfectly well with a stylus (conveniently tucked into a slot, always available), a pen top, or even a finger nail (I play classical guitar so I have an advantage here), but if the on-screen buttons were designed properly to make them large enough, would also work with a blunt finger. I used Graffiti all the time in place of a on-screen keyboard or even the keyboard buttons, so I never had to peck at a keyboard with a stylus or fingers.
I am currently trying to find a decent stylus for my capacitive-screened phone and tablet, because it is just so much more natural for someone who still writes with implements to use a stylus. I'm sure that there will come a time in the not too distant future when we will find people who have grown up without having to learn to write with a pen or pencil, who find that using a finger is more natural, but to date, everyone who has been through school will have learned to write in the traditional manner.
I look at the Galaxy Note 10.1 (not a phone, I know) with envious eyes, merely because of it's stylus. Looks like the best of all worlds, but is too expensive for me.