If we have full dive VR would there still be people living in real life?

It's natural that population stagnate when a society advances. In develop countries you need to get alot of kids that take care of you if you get sick or old. Then there is the lack of birth control etc.

When China and India and the rest of the third world countries are were we in the west are world wide population will start to drop. If we are still around by then