Babies need more than just food and warm clothes. And they are dependent on you for a long time. I don't see the point in weaning them off things when they are still too young to provide them for themselves. For example, they can't just log on to Hacker News when they feel bored. Crying might be the equivalent to typing "news.ycombinator.com" into your URL bar. Is it really so bad to take care of your babies' needs?