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.
For a time as a high schooler, I wanted to seem more interesting than other people so I drank it black. Honestly I kinda hated it, and went back to drinking it with cream and sugar, but that was more because I was drinking Tim Hortons.
Once my dad started showing me how to make actual good coffee with good beans, I never went back. Even iced coffee I prefer black most of the time.