I supose the question is directed at Apple rather than the world at large.
Why should I go and use another app? Why can't I just print to pdf from iOS Pages or Safari.
I see now that I raised the same question more than a year ago and also got all kinds of nice and helpful suggestions for "workabouts."
My question should be "Pages and Safari OSX have the option to print to pdf what keeps Apple from not applying that function in iOS?"
I have been trying to figure out what I was doing wrong, but it's sure not there. I am at a complete loss to understand why this is not an option for iOS version Safari when it has always been a part of OSX.
Apple really dropped the ball on this and they need to add the capability in Safari, especially because it's better for the environment when we don't need to waste toner/ink and paper.