I'm definitely a little jealous of those who prepare their own dehydrated meals ... but I admit I've never had the energy to spend time on that kind of pre-trip prep. And knowing me, I'd probably screw something up during the dehydrating process, and not realize it until I was in the wilderness.
The prepackaged stuff is easier at home and on the trail, and I can calculate calories and such very accurately before leaving.
This post really makes me think of my early backpacking days, before freeze-dried food was so readily available, and we actually had to do our own cooking in the out-of-doors! I kind of miss it, in a way, but I'd never go back to that exclusively ...