Another observation about the "Other side" (that is, really, about all of us) to add to excellent points made by others here. Most disagreements happen around things that have no direct impact on day-to-day life. People can hold widely different opinions about politics because... it's politics. Most of it is bullshit, and rest doesn't affect your daily life anyway, at least not immediately or directly. Take two peopl…
I completely disagree. Most political issues have a direct impact on people. Affordable Care Act is requiring millions of people to buy health insurance. Defunding Planned Parenthood would cut aid from millions of young women. Gun control laws have a direct impact on our nation's safety from internal threats. Legalized gay marriage is allowing tons of gay couples to finally get married and enjoy many of the benefits (especially financial) of the institution.
I can go on.
The only debates that don't have a direct and immediate impact on people are the abstract ones, such as the example you gave about government intervention vs. market freedom. But even those debates happen within the the context of concrete issues, proposed laws or ongoing lawsuits.