For hundreds of years people have talked about artists having inspiration, but often, some persons would say, write us a symphony or write us a song, on commission. The artists would come up with a masterpiece without waiting to have their muse inspire them.
Perhaps the best motivation for going to Mars is political. It is obvious that no single nation currently has either the will or the resources to do it alone, but a consortium of nations and space agencies could achieve it within 20 years.
The community of poets I belong to is not as close as it used to be, if only for the fact that our lives have become busier: jobs, children, and the like.