I have similar reservations that this expresses, and it leaves me wondering as to what kind of person is suited for this kind of environment. Perhaps that's a pointless question, although I think that there is at least one useful answer to it: I'm not the kind of person who's suited to those environment. I'm not well-suited to take such a huge chunk of my life and basically throwing it away by creating a barrier between it and my emotional life; I find it difficult to imagine even asking another human to do such a thing, and wonder how 'natural' it is to members of a species that evolved without such artificial separations between work and emotions and life.