I would suggest that we do have it in the West. It's not unknown to know people who live at their family home well into their 20s, don't work, don't go out much, spend their time getting stoned, watching TV, surfing the web, and playing computer games.

The only major differences between the hikikomori and the equivalent Western stereotype is that food isn't brought to the room, and this leads to some limited social interactions with those around them.

I can understand the appeal of being a recluse, and I'd much rather someone became a recluse than topped themselves.