We have incredibly realistic graphic engines and computers good enough to perform at their best.
We can create digital world in a really large scale already.
We can create quite convincing story lines.
We already have many mechanisms that move with movement sensors on our body but we are already working on lenses with nanotechnology able to work like a screen where we can interact with a "game", call it as you wish, a digital fantasy just as an MMO would be.
That basically means that soon enough we'll be able to play games without moving a finger as we already have such technology.
Soon enough we might be able to reproduce the taste, odor and maybe the touch of things in a digital world, combined with the incredible graphics it would feel like we definitely are there.
Combine all and put it on a person. That person would be in a comfortable bed connected to any kind of serum (such as hospital connections with people in coma) and we might be able to "live a virtual life". To make it happen we would probably need some kind of "weed", something that could alter our state of focus, our contact with reality in order to allow us to create an immersion in what we see as the real thing, in order to lose awareness of what it really is (a simulation).
We could literally live a life in other "dimension" while our body rests. However, it would probably be kinda hard to make it last for too long, as I said already (imo), we would need to keep that person in a constant state of "unconsciously aware" with reality, you could call it a "brain hack" I guess.
For sure we'll reach such point, our technology is advancing and someone with power to do it is probably thinking about it too. Would you support doing it? Besides it takes a bit of human experimentation, I've always been pro human experimentation when it comes down to this kind of things, screw all the "human rights, ethics and moral", that's a bunch of lies and doesn't count when it comes down to economics, so why should that stop us when it's about technology and exploration?
What's your opinion? would you like to "create" such "matrix" ?
It's not about taking us into a game, is about taking us into a virtual life, something like a dream but instead using technology to create the fantasy instead of letting our brain do it all.