Thoughts on Shel Silverstein's Where the Sidewalk Ends

I think that this poem had to do with the pressures of society. Especially if one lives in a city that has no ends to responsibilities you have to take on. The line where the children come in is where we get to see that he's remembering how children are free of such duties and responsibilities that weigh him down. He wants to be a child like that again. Similarly, the moon-bird represents him, I think. Where the moon-bird can go to rest his wings is a place where his worries are gone. He wants to go to a place where he has freedom to be what he wants to be, and do what he wants to do, instead of having to conform to society.