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VTOL systems expend considerably more fuel than their standard take-off counterparts in order to take off vertically. It is both more expensive and more environmentally damaging to try and do something like VTOL commercial aircraft. It makes no sense to pursue such an endeavor. The only reason that militaries use VTOL systems is because they have specialized requirements where their aircraft may need to land where no runway exists and/or at makeshift airfields.
The future of aviation is in more efficient designs. Eventually we will likely see something like a blended wing body. With a little bit more research we may see a return to supersonic jetliners as well, but only after we perfect the mitigation of the sonic boom so that they can be certified over land. If they are transoceanic-only aircraft, they will fail for economic reasons just like the Concorde.
The future of aviation is in more efficient designs. Eventually we will likely see something like a blended wing body. With a little bit more research we may see a return to supersonic jetliners as well, but only after we perfect the mitigation of the sonic boom so that they can be certified over land. If they are transoceanic-only aircraft, they will fail for economic reasons just like the Concorde.