I know this, because I am the same. I recognise that our systems are flawed, but I also recognise that I - as a voter - am partially to blame for this. And yet, I also feel comfortable enough to let and let live.
They may be the horses towing the cart, but they are not the driver. You are right that they won't want to revolt and potentially destroy the system because it's working "well enough" for them, but that's far from being the ones who decide the course of the nation.
When you have 2 parties that nominate oligarchs, your vote is already wasted.
The only influence that the average citizen has is to get involved at the city council level and help the right people climb into influence.
But when you have to choose between Trump and a Clinton, it's too late to make a difference.
they are merely doing what their lobbyists want them to do
FTFY.