Ever since I was a child, I've wondered if heaven is boring. When very young, I thought dead people became angels (theologically unsound) and sat on clouds all the time (very wettifying), singing hymns. I don't know where I got that idea, since the only church my sister and I attended was in my bedroom on Sunday mornings, with a children's Bible, a project that didn't last long. We did go to Sunday school three times once. Coloring pictures... listening to boring speech, not my thing.
And what about perfection? Isn't that in the eye of the beholder? To me, heaven would be perfect if they had dancing music and dancing, books and reading, many baked goods and eating, many dogs and reveling, and many people to get to know. Also, it could not always be serene, with the music, dogs, and people. Plus with so much beauty right here on earth, why relocate us?
I have met many Christians who think dancing is a sin and who think most really fun music is a sin to listen to. Some books are a sin to read. Some people are a sin just to talk to! Believe it or not, I met some of these people while I was in Bible college. Turns out that I didn't like that, and did not become a missionary after all. Must point out that for a very long time, I have not agreed with the idea of being a missionary.
As for an eternal joyless existence, many folks find that here on earth. I've heard people say they don't believe in hell because it is here on earth.