I would not assume all Risians, a planet of billions or millions, act like they live on an adults only holiday resort.
If you were to visit a hedonistic, human holiday resort (they exist in real life today) you would find the same behavior. So does this make Earth an unacceptable planet to raise a child?
The only times Raisa is talked about in the whole franchise and that includes TNG, DS9, and ENT, it's exactly in these terms, IE an adult only holiday resort... Just as Ferenginar is a place where it rains all the time everywhere...