What you say might be true - although there are many people who doubt it, with some quoting research papers - but it simply doesn't answer the question asked, and is pretty much a complete non sequitur.
People use what they use. So if they use base twelve or base sixty or binary or octal or hexadecimal or base five because they have a simple way of counting in that grouping then that's what you'll see them using. Just because we don't use it today doesn't mean anything.