That's because you're Italian, and when you think of coffee, you think of what we know as "espresso." And when you think of American coffee, you think of a "cafe americano," which is really just espresso mixed with water.
The brewing process is different, and therefore so is the flavor: espresso requires water to be forced through tightly packed coffee, which makes it more efficient for rapidly extracting every tiny bit from a small amount of coffee. It extracts the maximum out of each bit of coffee, getting the oils that require more pressure to extract from the coffee.
American or French coffee brewing processes involve letting the coffee and water sit together for a longer period of time; since there isn't as much force applied in the process, you can't "squeeze" as much out of each ground, as with espresso. You also get a more uniform flavor because you are using more coffee and aren't extracting the different oils that you get from wringing the coffee ground out completely; it's like skimming the cream off the top of milk.
The short and long of it is, some people prefer the more uniform taste of brewed coffee, while others like the more complex flavor of espresso, often simply depending on what they are used to.
As for turkish coffee, I'm fairly clueless (we don't serve it at my shop
), but I know it involves a smaller grind and boiling everything together.