This was one of the strongest criticisms of the original iPad by Alan Kay to Steve Jobs iirc. After that criticism, we got Garage Band for iPad (which imo is so insanely awesome I bet it will take at least 2 years to appear on other devices at that level of quality). We also have iBooks author, Brushes, and such "creative" apps. Overall, I see more "create" type of apps coming up.
The hacking apps leave a lot to be desired, but also seem to be cropping up gradually. I'm sure soon enough we'll see some pretty powerful "make something new" kinds of tools on these devices (so sad that Scratch/BYOB can't happen on the iPad .. yet <<glaring at Apple>>). OTOH, the sun may burn out before the "take things apart" kind of tinkering happens with the full blessing of the device makers.
I think the touch input is simply much less practical for certain repetitive tasks than a mouse and keyboard, due to the ergonomics. For text editing, lifting your arms from the keyboard area of the screen, or from a Bluetooth keyboard, to scroll the page, select a tool, insert the cursor, select some content, etc. is much less efficient than reaching sideways for a mouse and scrolling its wheel or clicking its buttons, with only subtle movements needed to position the cursor while you rest your hand on the mouse. It is both tiring and tedious to perform certain tasks without a mouse, and until eyeball tracking is workable, you're still going to want a mouse and keyboard device accessible.
The hacking apps leave a lot to be desired, but also seem to be cropping up gradually. I'm sure soon enough we'll see some pretty powerful "make something new" kinds of tools on these devices (so sad that Scratch/BYOB can't happen on the iPad .. yet <<glaring at Apple>>). OTOH, the sun may burn out before the "take things apart" kind of tinkering happens with the full blessing of the device makers.