I'm not a good cook, but I like the idea of cooking. I don't have time to plan a week of meals. I want someone to tell me what I need, and if they can also send me exactly what I need so that I don't get it wrong, that's fantastic. It may be so fantastic that I am willing to pay twice as much as it might cost in the grocery store.
I'm sure with a bit of culinary expertise and experience I could probably do it all on my own, but I don't have that experience, and I don't really have the time to acquire it, but I sure don't want to order out every night.
I haven't tried it, but Blue Apron sounds pretty great to me. I can cook but I don't need to worry about having no real idea what I'm doing? Good deal. That is way more approachable than doing a bunch of independent learning.