hi marshall.. Does make sense the more you put into something the more you are going to get out of it, i suppose it depends what your goals are in the end. If you just want to strum along to your favorite music, or have a sing song around the ole campfire then an hour a day will probably be enough, but i would imagine if you want to be some sort of " hum it and i'll play it, and stick an awesome lead into it while im at it" kind of a guy/gal, then it makes sense you are going to have to practice long and hard to get to that point.
not sure i can manage 28 hours a day..

:-)