Seems like Cafestol (the oil in unfiltered & french press coffee) rises cholesterol level. On the other hand, coffeine might trigger the mTOR mechanism in cells (starving does that usually), leading to cells cleaning better up, lowering oxidans levels, potentially raising life expectancy. Other studies say, coffeine induces apoptosis (programmed cell death) with the same mechanism. Apparently a mixed bag.

But wasn't there a study lastly, that the stimulating effect only works if you don't drink coffee regularly, while if you do and don't drink coffe, you get withdrawal symptoms, like having no energy, needing a coffee.

Did i miss anything?

For me, that (and reading about the ecological footprint of drinking coffee) lead to drinking barley coffee/tea regularly. And a coffee if i really need one.