Currently there are those who do live in a virtual world, these are the young males usually between 15 to 25 who literally close themselves up in tier rooms for years.
This is a serious phenomenon in Japan, its direct sufferers are called** Hikikomori**, but there are other flavour such as Otayu which seems similar, on the face of it, but is much closer to being a meditative hermit.
It’s very unlikely this could happen anywhere but in Japan, no Western parent is likely to allow their offspring to lock themselves away like this.
It is very hard on the family of such individuals, some of whom have shut themselves away for 7 years or more, the only reason some families actually know there is life is the dissapearance of food.
The sufferers typically surround themselves in an internet/multimedia world finding it preferable to living in the real one, with which they have difficulty coping.
To get an idea of the extent of this issue is at best only estimation, since the Japanese goverment does not collate figures, and many families are ashamed to admit that one of their number has this condition, but estimates range between tens of thousands, right the way up to 1.5 million.
In this sense, then, we are not talking morality, we are really referring to a form of mental illness, and for someone to prefer to live in a virtual world even under more ideal circumstances I would have to wonder at their state of mind.
One kicker in all this is that others who have suffered from this condition have gone on to commit horrifically brutal and motiveless crimes, and maybe the Columbine killers were just a US manifestation of that.
We do not seem to be equipped for a virtual life, or we have not been able to create a virtual world that would satisfy human needs so living in such an environment would amount to social and mental starvation.