I've been using Unix in some form or another since maybe 1986. It is an enormously effective lever. But the grody cruft isn't getting better -- there's an upper boundary on how happy I can be using it, but it's an aesthetic and not a technical one.
Partly this is nostalgia, and partly it's diminishing marginal returns. Nothing that happens to me is going to be as jarring a leap into the future as sitting down in front of a PC RT was, and I guess that's sad.