One reason we have these archival products is because they seemed more convenient when we were buying them then when it actually comes to using them.
Convenience is relative.
Compared to making a frozen pizza, making a pizza from a pizza mix is inconvenient. However, compared to making a pizza from scratch, the pizza mix looks quick and easy. The convenience of a product depends on what we are comparing it with. When people shop, they often picture themselves as having ample time for cooking. They might compare making a nice pizza from a mix with making a roast, or a casserole.