First off, the mobile websites of today are a huge step above WAP. This:
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is NOT indicative of how we view mobile websites today. For most phones, there was no touch interface. Graphics were barely there, if at all. And even the text looked pretty bad.
If you were really lucky, you could get something a little nicer on your PDA:
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But that often required a proxy service that you had to pay extra for, and the info was synced periodically, not in real-time. Unless you were really enterprising and new how to modify a sync cable to hook up to your non-smart cellphone, and use
CSD to pull in new content at a rip-roaring 9.6kbps. Or, you had a lot of money and could get yourself one of those early smartphones, that got about the same 9.6kbps data speed.
(Yes, I admit, I used to do this back in the day.)
And with WAP, there was no choice. Either a site had a mobile-optimized, WAP-Compliant website, or it simply couldn't be seen on your phone, at all. with current handsets, the
option is there for a content provider to make a mobile site, but their lack of desire or inability to make one doesn't mean you're out of luck.
The point remains usability.
Done right, a mobile-optimized layout lets you quickly digest data in a touch-friendly interface in a design optimized for a small screen. It's often better than having to zoom in and out to look at certain parts of a web page to get the into you want, or scrolling all over the place. the physics of fingers on a small screen remains an issue that the current technology has to contend with.
There are also things that multitouch mobile interfaces do really well, like tapping through menus to get routine tasks done quickly, or the way you can swipe to "flip" through pages on a tablet, which isn't' as easy or natural to do on a mouse/keyboard/screen interface. Might as well take advantage of that.
Don't get me wrong: I really don't like when sites FORCE you to use a mobile interface, and don't give you the option of seeing the full version if you want it. Usually the same sites that do this are also the ones that did a lousy job of implementing the mobile interface, making the mobile site nearly useless anyway.