One reason why I'm not a Christian is that I have a hard time believing in the Christian view of heaven. I recently left Utah to work at an internship in Pasadena. While there, I met a preacher and we had a long conversation about Heaven. He kept going on about how Heaven is perfect. However, I don't see how I could be happy if my every desire was instantly satisfied.
Like Jar, my ideal is where you just learn new things. However, if struggling to learn is a negative thing, then in Heaven, wouldn't everything be easy to learn? Even if you didn't learn everything instantly, Heaven is for eternity. Eventually, you will learn everything. Then you'll get really bored.
Anyway, that's my thoughts on Heaven.