Because frankly, opinions and standards are different things. Linespeed is base10, has always been base10, predating harddrives, or computers. So networks, pretty much the only thing we all have in common, are base10. Modems are base10 (14.4k is 14400 baud, not 14745). Almost everything is base10. It's not opinion. It .. is.

Memory is base2 because that's how we address arrays. It's the odd one out. Preferring to believe otherwise just doesn't seem very geek to me.