Exactly why people hate them. You want to get people to come back? Make it easy for them to accomplish something. Don't add an extra step where I have to switch

Exactly why people hate them. You want to get people to come back? Make it easy for them to accomplish something. Don't add an extra step where I have to switch contexts and download your app over a slow connection after I've already downloaded your 8mb of js over a slow connection :)