|Like many incremental advancements in computer hardware USB 3.0 may eventually take off. That probably won't happen until after your current rig is obsolete.|
Firewire 800 has been around for some time but to my knowledge never caught on with hardware manufacturers. There can be many reasons why this happens. Licensing fees for instance.
eSATA is another advance that has made some inroads. My feeling is these newer standards are either not widely known or consumers may not see any real advantages. You also need to have that critical saturation level. USB does have that going for it.
So what if USB 3.0 is theoretically 10 times faster than USB 2.0. USB 2.0 doesn't run even half as fast as the theoretical standard.
USB has not lived up to its hype. When first announced it sounded good. However, try connecting even 10 different devices to the same USB 2.0 controller and see if they work right. The standard calls for 255 devices if memory serves.
Anyway, as I stated above, if you don't have to pay more for the newer standard then by all means get it.
I bet very few here know about VESA local bus. It was superior to what was available at the time but was leapfrogged by AGP. Who knows what is coming next.
Serial data transfer gave way to parallel mode for hard drives in PCs. Now serial mode is replacing the parallel interface. Much of this has to do with the increase in available CPU cycles.
Then there was 2.88MB floppies and of course Betamax tape.