The Two Party System is Flawed

I'm not schooled enough to know how the two distinct parties formed, but anyone can tell that today there is an unprecedented divergence the two main parties. The biggest flaw is how much they have become opposed to each other.
The different parties are best described as "Birthday Party" and "Alcohol Party". In the former party these other such parties fit: "Pajama Parties", "Kid's Parties", etc. In the latter we have "Dance Parties" & "House Parties".
The flaw becomes apparent when you say to your parents "I'm going to a party tonight" and they look at you with consternation. You must clarify "Oh! I meant, a birthday party!" Suddenly their minds are filled with images of cakes, candles & jovial friends. The other kind of party could be nothing but immorality: drugs, alcohol abuse, broken furniture, vomit, gangsta rap and/or sex.