Why don't we have better government?

We already have term limits, it is called voting. I'd rather have the option of keeping the good guys and getting rid of the bad. With term limits even the good ones would be forced out. The problem is, people don't pay attention, and not enough vote. We could have many parties, then we would have parliamentary government, consumed with building coalitions like Europe, no thanks, or one party like China, no thanks again. What we have is lousy, but it is still the best anyone has ever come up with. Every politician will tell you he is doing what is in the best interest of the country, so when you say you want politicians that will work in the best interest of the country, what you are really saying is, you want politicians that agree with you. It is called politics for a reason, and the conflict is what we all hate, but there is no way to get around it where humans are involved.