I use a jet-boil for both morning coffee, and for boiling water for freeze dried meals when I am backpacking. It is quick, user friendly, and simply easier than getting out the MSR, priming it...trying not to overflow the primer cup while shivering from the cold, boiling water, pouring 1/2 of it on the ground while transferring it to a cheezy plastic cup....
It is certainly not the end-all be-all of camping supplies...but it serves a definate purpose, and in my experience, serves it well.
DesertDude on the other hand isn't a huge fan, as he has worn a couple of them out. Of course, his would last longer if he didn't go camping every friggin day!:sombrero: