Bitter isn't black coffee. It's bad coffee.
Most people who say they can't drink it black have only ever had it burnt, stale, or brewed badly. Of course that needs sugar to fix.
When coffee is grown well and roasted with care, black is simply the truest way to taste it. There's nothing to hide from.
Simple, clean, and honest.
Black coffee is just coffee and water. No sugar, no dairy, no calories, the simplest ritual there is.
It's also the only way you taste what you paid for. All that care from the farm and the roast reaches you through the cup, not through the milk.
You grow into it, a little at a time.
Nobody wakes up loving black coffee. You build the taste for it, and it happens faster than you'd think. Here's the easy way.
Start with a sweet, low acid coffee. Chiapas is made for exactly this.
Brew it a touch stronger at first. It's more forgiving that way.
Notice one thing each cup. Is it sweet? Nutty? Smooth?
Give it two weeks. Your taste catches up.