For me reefing appeals to the creative, artistic, mechanical, social and ecological interests. I enjoy the treasure hunt of searching and finding a new coral. I enjoy aquascaping and placement of corals. I enjoy the challenge of growing corals and the beautiful results when I am successful. The ever evolving learning journey that never ends brings much joy. These things combined with the social network that the community provides all make this hobby the best there is. Reefing pretty much covers it all.