Different usage and ways of interfacing with devices... I'm sure for equations even a graphing calculator app may not be of help. As an interface for what I do 99.9% of the time having been there and in the sense that Steve Jobs meant it rather than being ridiculously taken out of context.
I am fully glad the Stylus is well and truly dead.
This thread, or what's become of it has lost the context of why the death of the stylus was the best thing that ever happened to PDA phones. Steve Jobs was 100% right and if it wasn't for the death of the stylus we'd all be pecking at phones running Windows Mobile 6.5...
Thats where smart phones were at in 2002, and I'm not sure many are old enough or have been there to understand the context of why Steve was right. Even Bill Gates said Steve Jobs was right when it came to the smart phone now you just want to take it out of context and turn it into some childish crap like this thread.
The stylus isn't dead, far from it. Tons of Note devices get sold every year, both phones and tablets. The surface Pro line is doing quite well. There are a good number of windows tablets with stylus support as well. No, the stylus is alive and well.
I agree that for driving the UI the stylus isn't ideal, but this isn't universal IMO. There are times that a stylus is indeed superior, one example is highlighting text, especially when you have to do a lot of it. But these examples are not common and the overall UI navigation of a smartphone should not be stylus driven.
For me, I'm glad the stylus is NOT well and truly dead. I find it useful on a daily basis. I can certainly understand a user who has no need for it. I can't understand eschewing a feature that has no cost on size or weight that just sits in a slot until you may need it, but that's just me, I like extra stuff that's free.