Why writing is like knitting

I sit here surrounded by wip's. I have more stories in progress than I like to admit to, one rewrite requested, two contest entries and an anthology submission, a young adult requested by my nephews that I think will be a really great story (I have to think of a pen name for my ya work) AND about six of my in progress knitting projects. I know life is a wip, but why is it that the beginning and ending of a project are so much more fun than the middles. Life is Not like an Oreo cookie!