Bein' quadridextrous is an advantage all chimps appreciate, but if ya ask me...havin' another two sets of arms is just a bit too much. It also means 4 sets of cuffs and cuff links, and that gets expensive. Imagine the difficulties of gettin' yer shirt (or hers) off gracefully in romantic situations! I guess that's why them people on Mars mostly only wear jewelry, and not clothes.