Disposable filters are my biggest conundrum. For years I would either use Aeropress with a metal filter, or French Press (metal carafe + press), or pour-over with something like the Bodum (metal filter). But I wasn't satisfied with my coffee. I went back to paper and it was like a breath of fresh air. I enjoy it so much more. I tried to tell myself I preferred the oils, etc. but in the end I greatly prefer the smoothness of filtered coffee.
So that's where I'm at now, buying big packs of paper filters for my Aeropress and V60. I'm not sure how to move past it. I guess I just tell myself it's infinitely better than Keurig for less waste and massively better flavor.