I spent several years in the Marine Corps and have eaten tons of MRE's in my day. I actually like them. They have something nuts like a 10 year shelf life, and pack about 2000-2500 calories per. Also, one MRE can last a person all day (if broken into several small meals). They are about $65 for a case of 12 individually packed meals.
My only concerns were cost and calorie intake. I've never done an extended hike that lasted more than 6 weeks, so, I'm not sure how the cost would differ from standard trail food. Calories are a concern as well. I've never hiked mountianous areas and I know it takes a lot more calories than the Florida Trail or any other trail I've done.
Basically, I'm just wondering of anyone does this, or has done it, and how it worked out. I would eat other things as well mainly to avoid burnout. Thanks in advance.