I think we should build an anormous senior citezens retirment centre on the moon. That would be kick ass. I would go there mind you need a few million to live there probably but anyways. It could have a greenhouse for gardening because old people like that and ai swmming pool (maybe depends on gravtiy im not sure). The best part would be the old timers tghat have trouble walking would feel like the Harlem globetrotters with the low gravity. You physcists better get to work on this when im 70 im headed to the moon.