I spent 60-70% of my time not working because even though I'm working with interesting technology, it's stuff that won't get used by almost anyway, my peers don

I spent 60-70% of my time not working because even though I'm working with interesting technology, it's stuff that won't get used by almost anyway, my peers don't seem interested, my manager is absent and the requirements are all over the place (symptom of nobody caring, whatever is done is okay as long as it impresses, for some random definition of "impresses)... ... so it needs to be done to check an item in a list but nobody cares. If nobody cares, I don't care either, which makes me think I'm wasting my time, which leads to depression, feeling burnt out, procrastinating even more, etc.