For every modern little-endian processor you name, I can name an equally modern big-endian processor. IT DOES NOT MATTER! It is a completely arbitrary choice. Some processors will even do both! BOTH architectures have existed since the very beginning of computers, and BOTH still exist today in brand-new designs. NEITHER has any compelling advantage. The two biggest volume processor design companies in the world are Intel and ARM. Intel is little-ending, ARM is big-endian. So what?