Is Citizens United a problem?

Almost daily, I receive an e-mail asking me to vote against CU, and on occasion, I have. But, is CU the problem? Unlimited CU money elects politicians; however, big money controls politics, so does it really matter if it puts politicians into power? If money controls politicians in power, as most think it does; it seems to me how they get to D.C. is immaterial. So maybe supporters of CU aren't so smart after all. To reiterate: let's say I'm big, bad Corporation X. Let's also say I spend ten million dollars (by the way, about like me coughing up a nickle) getting my congressional pals to vote my way. Why then, should I spend another ten million to buy their ticket to the game? Hmmm.