I enjoy creating them and I think that has a lot to do with their size. Plus normally I am able to create them in a shorter period of time than anything else I do. I love the satisfaction of completion.
Recently I discovered a challenge blog that is for ATC's. Instantly I was hooked and often play at Wicked Wednesday ATC Challenge Blog, which is owned and hosted by Jenn Borjeson. There is so much inspiration there that I have to check the blog daily to see what's new. Jenn hosts a new challenge each Wednesday.
I'm hoping we can inspire you to create ATC and maybe join in on the challenges with a few examples of ATC's.