> The amount of sugar you were putting in your coffee is probably not close to comparable to that in these drinks.
Even if you put just 2 teaspoons, that is 10gr of sugar. If you drink 3 coffees a day, that's 30gr or your entire daily recommendation as per WHO.
Unsurprisingly, I too drink my coffee black. While I can stand coffee with milk in it, and sometimes order cappuccinos at fancy coffee shops, sugar just ruins it. If you can get off it, you'll be much better off in every way.