Why do they like Chinese tea so much?

We cannot leave half-finished cups of tea sitting around anywhere or
else the cats will stick a paw into them and then lap tea off the paw.
We drink mostly Jasmine and Oolong, occasionally Hojicha or some
other, but never "regular" english tea, so we don't know if they like
that kind or not. They seem to love other kinds of tea. Not herbal
tea, just normal tea - the undyed kind.

Isn't this just a tad bit strange??