1, They contain preservatives and carcinogens.They are way too expensive. They are not spiced exactly the way you would most enjoy them.
Stop paying high prices for the supermarket brand jerky, hot dogs and sausages. It is easier than you think to turn out a far superior product in bulk, for far less money.
Your at-home products are healthier and more flavorful than the products at the store, because they are fresher and spiced exactly the way you like them.