First, as BG noted, you got mighty long arms for a 6 footer. Your draw length was measured at the archery shop?

Second, pulling a bow takes strength not usually used and needed by most people. The last thing noted by archery companies is a certain amount of strength is required.
Been working out every week, for some twenty years, with 5 lb weights. Usually use them in a archery draw. Otherwise, for me, not a lot of reason to push myself. I got an old body.