What is your alternative? Let the Democrats remain in control? How did that work out for you in 2008?
The 2014 election is in less than a month. Either the Democrats (i.e. Harry Reid) will continue to control the Senate or the Republicans (including a lot of RINOs) will control the Senate. One or the other is going to happen. The good fairy is not going to suddenly appear and give you a third option.
I wish that we could replace all of the RINOs with conservatives. I wish a lot of things.
"Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts and evidence." - John Adams.
All we can do is choose the least bad option between the options that we actually have and continue to work like hell to have better options next time.