The Wormhole wrote:
Artificial gravity is necessary for the show's budget. They simply don't have money (or even time) to hook all the actors up to harnesses so they float everywhere all the time. It's why BSG never once considered not having artificial gravity.
We will also need artificial gravity in real life as well when we send ships into deep space as a species; humans won't be able to survive without it reinforcing our skeletal structure. So somebody will have to figure it out somehow (perhaps rotating sections, as has been already figured out by many scientists and designers.)