alt Hacker NewsPeople get hung up on bad optimization. It you are the working at sufficiently large scale, yes, thinking about bytes might be a good use of your time.
But most likely, it's not. At a system level we don't want people to do that. It's a waste of resources. Making a virtue out of it is bad, unless you care more about bytes than humans.
These bytes are human lives. The bytes and the CPU cycles translate to software that takes longer to run, that is more frustrating, that makes people accomplish less in longer time than they could, or should. Take too much, and you prevent them from using other software in parallel, compounding the problem. Or you're forcing them to upgrade hardware early, taking away money they could better spend in different areas of their lives. All this scales with the number of users, so for most software with any user base, not caring about bytes and cycles is wasting much more people-hours than is saving in dev time.