Work for work's sake

Gita says not to think of the result and just work for work's sake. Its difficult to achieve that state of mind. But what if we do achieve it. And then due to some other reason are unable to achieve what we wished. Just a single wish in life. And we aren't granted it. Or maybe we're feeling lost before we have actually? And the real reward is really hidden...and on its way, bigger than we asked for?

Detachement, is it really worth it?

While detachment is so glorified in Bhagwad Gita and also other books, and after all the effort it takes to be really detached, is it really worth it? Is it really a good feeling to feel nothing about some things?
We don't hate somebody. And we don't like them. And yet we interact and we never care about them. Is that good? Or is that hollow? The nothingness of it.
Maybe detachment specifically applied can be a good thing. We can be detached about the outcome and work hard and just look forward to whatever we get. We can not-care about what critics say. We can love and not mind if we're not loved back. But at the end of it, is it really okay to not to be loved back? How long can we tolerate that? Without a reward to inspire, will we still be interested in working for something?
Passion is an important aspect in our actions. But how can passion be irrespective of demands or desires? If we don't want something, we can't be passionate about it. If we're passionate how can we be detached to it?
We want it, we are attached. Directly.