Erm, k. I do the majority of the grocery shopping and all of the cooking for the wife and I. I also cook occasionally for private parties ranging in size from 10 to 125 people.
I enjoy cooking my own meals and have been told that I'm pretty damn good at it. Most restaurants suck. When I go grocery shopping I generally go once a day because I like to get the freshest ingredients possible. (Some veggies/herbs that I use commonly I grow myself.) Each grocery trip is usually a minimum of 30 minutes or more out of the day. Just taking the bare minimum of 30 multiplied by 7, if I cook every day of the week, it is over 3 hours. 3 days a week of Blue Apron saves me an hour and a half per week That's not to mention the time researching recipes if I want to cook something not in the standard repertoire. At my wage Blue Apron pays for itself. Plus I work from home so there is no just swinging by the grocery store on my way home from work.
Blue Apron obviously isn't for everyone. For some of us it's a nice change of pace and makes financial sense too.