My mom always took her coffee black, so did my grandma, so I think it imparted onto me. For me I like the bitterness, when I take a sip of my morning coffee and it hits there's nothing like it.
Over the years I've tried to get into sugared coffees and I still keep coming back to black. Although every now and then iced coffee with creamer and sugar is a good treat.
I appreciate the different flavors black coffee offers. From the different roasts to the various growing locations, each bring their own unique tastes. For hot coffee I prefer a darker roast, and the opposite for iced coffee.
At the same time, I'm a huge sucker for the glorified Hot Chocolate known as a Mocha. What's weird is I never go halfway; I don't like cream or sugar in black coffee.