[fsloth]

If you think the future of humanity is in space (I do, but opinions vary) then yes, space tourism is excellent and critical idea.

Generally it drives practical use cases, has a clear revenue model (which is really, really important to keep any complex financial and technical project honest) and drives popular demand for "space" in general. Having rich and famous tweeting orbital and translunar updates would do more for image of space travel than 50 years of science fiction and state advertising combined.

For example, low gravity has lots of well documented side effects. Even though short term microgravity is not too bad, having a constant stream of rich people travel there will create more demand for space medicine, which will probably drive innovation to improve the lot of all space travelers long term.

Launching stuff to orbit will have a carbon cost. And it should be tallied. But it's a cost we have to pay ANYWAY to become an interstellar species.