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The economics of crewed space exploration have shifted dramatically over the past two decades as private companies have entered a domain once dominated exclusively by national space agencies, and nowhere is this shift more visible than in the falling cost per kilogram of payload delivered to low Earth orbit. Where government-led programs in the 1980s and 1990s routinely spent tens of thousands of dollars to lift a single kilogram beyond the atmosphere, reusable rocket architecture pioneered by commercial firms has driven that figure down by more than a factor of ten in some cases, fundamentally altering which missions are financially viable. This cost collapse has enabled a wider range of actors, including universities, small nations, and commercial research consortia, to plan missions that would have been unthinkable a generation ago, from dedicated biology laboratories in orbit to constellations of small satellites monitoring agricultural yields. Yet lower costs have not eliminated the fundamental risks of spaceflight, and engineers caution that cheaper access to orbit has, in some cases, encouraged riskier mission profiles that prioritize speed and cost savings over redundancy, a trade-off that regulators are still learning how to evaluate. Proponents argue that a degree of increased risk tolerance is appropriate and even necessary for a maturing industry, pointing to aviation's own history of gradually improving safety through iterative failure rather than exhaustive upfront caution. Detractors counter that crewed missions carry ethical stakes that uncrewed cargo flights do not, and that cost efficiency should never be allowed to erode the safety margins built into human-rated spacecraft. Both camps agree that the coming decade, likely to include renewed lunar landings and the first tentative steps toward crewed Mars missions, will test which philosophy proves more sustainable.