I kinda feel that “plain black coffee” in it’s various forms - Americano, drip brew, whatever - is the only way to actually drink coffee. That’s not to say I don’t approve of milk coffee or lattes or whatever - I love them - but they’re drinks which have coffee in them, even if it’s a dominant flavor. A banana smoothie isn’t a banana.

People tend to think that dark roasts/more bitter coffees are “stronger”. They actually have slightly less caffeine, as the longer the beans are roasted and higher temperatures they are cooked at naturally cooks off some.

For the most part a lighter/darker roast is all about what one likes to taste.