Republicans vs. Democrats

Ok honestly, why has America diminished to a political party system. Our first president, George Washington, feared that very idea and shunned any process that moved towards that. How many voters vote now upon issues and values. I would say below 25%. If your republican you vote republican, if your democrat you vote democrat. Sure, those people of your party usually agree with you is certain issues. But, why if your a republican everything Bush says you automatically presume its the best and only way, and why do democrats blame him with out even knowing half of what he's saying. I truly wish there were no parties and this would change. The reason I'm talking about this is truly a mystery to me. Guess Hardball has gotten to me.