Thyme Tea: Why is it so good?

No idea what makes it so good. In Albania and northern Greece I saw dried wild herbs at markets. I stayed the night in Theth (northern Albania) with an Albanian family and one of the things she made was boiled wild herb tea. Simply boil a bunch of dried herb in a big pot and drink it pure. Very aromatic, a lot better than yerba mate I had in Argentina which I thought tasted like floor sweepings, twigs and dirt.

Along the (mountain) paths in the countryside in Albania I did see endless shrubs and patches of wild thyme.

I can identify only the sage. Right next to it, lower right, is probably thyme.