1) It's cheaper / healthier than eating at most restaurants [where I live, in Upper Manhattan]
2) The nearest grocery stores also aren't cheap. If I could save money, it would cost me a significant amount of time. [the lines at Trader Joe's alone, not to mention meal-planning + time to & from store].
3) Some items are hard to buy in the right quantities. [eg red wine vinegar]
4) I don't need to do much normal grocery shopping. Between farmer's markets and Amazon Prime Now, I don't have a necessary weekly trip to the store.
As I mentioned in another comment, I am one of the nearly-perfect early customers. It fills a need that I have, and it clearly doesn't fill any needs for you. This is actually a huge problem for Blue Apron, because it means that to acquire me, they just needed me to know about it [good!].
[But!] To acquire you, they'd probably have to (a) lower costs, (b) do lots of ... marketing?, (c) provide more food options [that's actually been happening], and (d) make cooking trivial.
Delivery is a huge expense [I heard 20-30% [1]] for a service like Blue Apron. I imagine the goal of many of these "delivery" services is to get in on the ground floor before delivery / logistics become a solved problem of self-driving cars. They'll use VC money and low-margins to survive until their delivery fees drop and hope that being dominant in the market helps them keep their spot. ... And then they'll have a few years of reasonable profitability until they're disrupted?
[1] https://www.washingtonpost.com/news/wonk/wp/2017/06/21/heres...