It depends on the emotional/financial burden you put on your family so you can experiment with introversion. In my case, I couldn't do it, I've learned that feeling useful is an important component of my happiness.

I agree it seems worth doing, especially if you have the belief that at some point technology will advance sufficiently to allow interaction with other people again.

Then why is solitary confinement considered torture?

That's an interesting point for sure. I guess because it happens against ones will, and I think a coma where one is still conscious would be a similar thing.

Probably because it'd be excruciatingly difficult, like I said.

I guess it matters what you think life is for. I don't think I get another go at life on this planet, so I figure I might as well experience as much of it as I can, even if it's extremely limited and painful.