I have a Dell U2720Q monitor that accepts HDMI 2.0, DisplayPort 1.4 and USB-C. I use USB-C because the monitor acts as a hub for a range of peripherals (keyboard, mouse, webcam, speakers, etc.etc) and ...
DisplayPort solves the one problem HDMI was never designed to handle.
HDMI excels for media consumption, while PC gamers prefer DisplayPort.