This “every single pixel” stuff reminds me of how many people will work at a tube of toothpaste for a minute just to squeeze out one more drop. It’s not really about getting more toothpaste, because you could easily just buy more. It’s also not really about getting the most toothpaste for your money, because you’re likely not also focusing on cheap tubes, bulk buys, etc. It’s certainly not about getting the most toot…
I don't always buy food in bulk to save on cost, or look for the best deals, but whatever I have bought I try my best not to waste. It's irresponsible. Maybe in some ways I feel it's bad for the environment, or sets a bad precedent for how I think people should behave. I don't mind what sort of things you choose to buy or like, but I would prefer you don't waste them.
Resources of all kinds are limited, so making the most of what we have is an important principle, at least for me. Sometimes it's silly -- eg. I really should replace those old socks with holes in them, I can definitely afford new ones, but if something can do a bit more before being thrown away or replaced, I'll try and get that much more out of it.