Everyone in the US knows how lobbyists, hired by corporations or other groups with lots of money, sway how our congresspeople vote by simply bribing them. It's a disgusting situation, yet, somehow we all complacently accept it as normal. I'm sure our founding fathers had no idea this would happen nor how much technology would advance.
Congress does other things, of course, like holding public hearings on important topics, etc., so I don't think it'll really be as simple as outright abolishing it.
Unfortunately it seems very unlikely that the US will ever switch to a direct democracy. But I for one would sure love to see it.