I'm viewing it from knowing that we'd win one championship (or two) at the cost of not being able to win it for a very long time after. So, in this scenario, the future is known and in that situation, no, a championship would not give me as much pleasure as a decade of possibly winning a championship.
Now, obviously, we don't know the future. So if we can add a Durant, win a ring or two and then rebuild in fairly short order, sure I'd be all for it even if we didn't actually win another championship in the next decade or two. And the championship would mean a lot to me. But posters keep saying, as long as we win it all I don't care if we suck forever, and that's something I can't agree with.