Megadungeon Mania

Today, I ordered a print copy of Patrick Wetmore's ASE1: Anomalous Subsurface Environment and became a backer of Greg Gillespie's Barrowmaze II project. On the 21st, I purchased the PDF of Barrowmaze I. Last month, I became a backer of James Maliszewski's Dwimmermount project. Just one megadungeon is supposed to keep one's players busy for a long, long time, so what am I doing with three? And why am I seriously planning my own megadungeon? It must be megadungeon mania.