Try using a Surface - it really is nothing like the old tablets of yesteryears.
Convertible laptops were 5lb monstrosities that were nearly impossible to hand hold, emitted tremendous amounts of heat, had incredibly poor battery life, and infamous reliability issues that came from a mechanically complex transformation mechanism. They also used resistive touch screens that were easy to damage, required frequent recalibration when heavily used, and were difficult to use with fingers (making the devices almost exclusively stylus-based devices).
So no, the modern incarnation of the tablet (in the way that iPad has defined it) is nothing like the tablet of old. In fact, if you look at the new convertible tablets coming out of OEMs, they've come pretty far too: capacitive screens, solid construction, hugely reduced weight, unbelievably lower heat output, and battery life that actually matters. We're also seeing novel new ways of building convertibles (e.g., separating keyboard from screen entirely) that make the devices far more realistic for handheld use.
The big secret to tablets that Apple realized, and other companies are slowly picking up on is the importance of the screen. Old convertible laptops used the absolute worst screens that had limited viewing angles, demonstrated ugly moire and discoloration on taps/presses, along with a slew of heat output and power consumption problems. Compare with the calibrated, accurate, brilliant IPS panels that now inhabit tablets (both Surface and iPad have IPS panels), they are worlds apart. When you're putting together a mobile device that is going to be oriented this way and that in someone's hands, a shitty LCD panel really doesn't cut it.
And the problem with Asus and their "half price" touchscreen laptops is all in the screen.
