Besides the pleasure of preparing your own food, I was hoping that by doing so there would be a way to create a healthier product.
Well if you do your own you choose to use meat that hasn't been exposed to all of the antibiotics, hormones and other stuff that they feed animals these days. You can adjust the fat content of the food based upon your likes and dislikes. You certainly know more about how it has been handled and the cleanliness of the prep area. The food is going to be more fresh and have less preservatives than what you would buy from the store.
I'm in the process of looking for meat that is grown locally and that I can get straight from the farm rather than buying from the grocery store. I have just recently realized that most of the "fresh meat" that is sold in the grocery stores have been "enhanced" for flavor. Meaning it's injected with some type of brine that has who knows what in it. This is why the ribs that I have cooked lately have ended up more ham like, I believe the sodium nitrate causes that, than just smoked pork like.
For a while there every chicken breast that I cooked had some kind of funky salt flavor to it. You guess it, enhanced. If I want me meat brined I want to do it myself so I know what's in there and what I can add as sauce. Heck half of our food is processed before we ever even get our hands on it and that goes for "fresh" foods too.
My closest butcher store is an hour and a half away. If I'm going to go to all the trouble of smoking meat, grilling, cooking whatever I want the food to at least taste like I put all that effort into it.