>>12255
Probably because it's a fairly old system of democracy that arose completely apart from any monarchy.
The parliamentary systems, which I agree are way the fuck better, were meant to give a broader voice balancing out the authority of a monarch.
I also wonder if they gave as much thought to political parties in the 18th century and how the American system tends to create a 2 party duopoly. There is no mention of political parties in the American constitution.