I definitely make compromises by using instant stuff, but I recently got a dehydrator and it's great to pack some veggies. A whole bag of spinach dehydrates to practically nothing. It takes more fuel to cook from scratch but I'm willing to carry it.

The low cost of whole, veggie food is definitely a bonus. A meal or two at even a cheap restaurant will be equal to a camping fee or the gas to get out there and not be very healthy. Instant food like Mtn House is, what, like $5 or $6 for 2 servings (I've seen it at $7.99!) that are actually 1 serving, versus $1 for a bag of lentils and some spices that you can buy anywhere, will last for three meals, produce less trash, and make your pack feel significantly lighter every day.

--camelman