In short, we should just drink plain coffee, without milk and sugar ;)
In short, we shouldn't drink anything at all.
Cos when you drink without milk and sugar, you might now have caffeine toxicity.
When I look at science, I just tell myself that prevent what is possible to prevent and work on other things.
I have not done so much study on sweetener but I intend to have a look at it
There is what health tells us, and there is what we like. Very often, those are not very compatible. I personally like coffee a lot, but as a plain coffee. I know exaggerating is definitely not good for my health... but I like it, so, I only try not to exaggerate ;)
For the rest, it is at the end a matter of that there is no free lunch. There is always a price to pay and we need to live with it.