system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: political parties bring nothing but problems to the political system, and only serve to divide people and make government slower.

In my experience, political parties have been nothing but poison. Political discussions are derailed the moment someone mentions what party they identify with, most people tend to only talk shit about the other party without listening to them nor trying to find any kind of common ground, and they create an "Us vs. Them" complex in government that does nothing but slow it down and outright stop it in some cases (see: Tea Party republicans in the Senate vs Obama). The only benefit I can see from parties is that they help provide easier funding for campaigns, but otherwise they don't help anything. It's convenient for grouping, but almost no one agrees 100% with another person on political issues, and sometimes people in the same party have complete different viewpoints, making the party identification somewhat arbitrary in my eyes. 

So, yeah. I'd like to see an argument for why political parties are a good thing, either for society, for the government, or both.
gpt
Political Parties are essentially Unions for voters. It's collective bargaining for ideas, among people who share at least some core values. They don't need to agree with every position the Party takes because not every issue holds the same weight with every voter.