Fact-based fields are terrific, because nothing is subjective. That's lovely, but it leaves a lot of things in life which are not categorized that way, where subjective truth is the only truth. Art appreciation, for example, simply doesn't operate by the rules which govern electrical engineering.
The world would be a flat and boring place without disagreement regarding more-or-less subjective truths. I enjoy the variety, myself, even if I sometimes find naivete or ignorance quite bemusing or even exasperating.
Some disputes in the social sciences, such as those about the connection between intelligence and academic achievement, are informed by facts but also have subjective elements. These disputes can be more acrimonious than purely subjective ones, because each side in the dispute is convinced it is factually correct, and they can be more long-lasting than disagreements in the natural sciences, because they cannot be resolved by a single, clear-cut experiment.
