Space: Tourism, Competition, Militarization

Once the domain of federal governments, space travel has entered the realm of private enterprise. Elon Musk, Jeff Bezos, and Richard Branson all have directed portions of their vast fortunes toward space tourism. Is this just a billionaires' hobby, or is it a legitimate peek into vacations of the future? The militarization of space is also being considered by world leaders, but concerns arise about the potential for dangerous activity within the international community. Is continued exploration into outer space even worth the time and money being spent on it?