I bought a 60' x 60' building with three 12' x 12' garage doors. I had two vented gas furnaces installed for comfort in the winter and a 30A circuit installed next to my 'C' so I can fire up the A/C in the summer if I'm loading. Also have a fridge and upright freezer to store food and drinks for upcoming trips, and a full set of tools if I need to fix something during down time. Full bath, including shower.
For recreation, a fully stocked bar and back bar, pool table, Dish TV, two pinball machines and a juke box that plays 45's. Portable tables and chairs for up to 60 of my closest friends. And no neighbors to call the police. Obviously, I'm not married or I would have been killed by now. :)