One essential aspect of the French (and Mediterranean) culture of wine is that it is, almost always, associated with meals. There's no French cooking without harmonious wines, but we would rarely open a bottle of good wine in the afternoon as I have seen some British and Americans do... Even the cheapest red French wines are better appreciated with bread and cheese, for instance -- but not any wine with any cheese: you would kill a Burgundy with Roquefort.
Port here is often used as apéritif, but it is also excellent with Portuguese smoked delicatessen, or even French foie gras -- although the latter is more often associated with mellow white wines like Sauternes or Jurançon.
Another very particular (and expensive) French wine is the Vin jaune (yellow wine) from Arbois, Jura (Northern Alps). Tastes a bit like Spanish dry sherry (jerez) but way more subtle. Excellent with foie gras, too, and used in cooking (especially fowl with morels).
Nvr, I know Marques de Cáceres as a very reliable brand (no bad surprise). And, speaking of "Bull's blood," there is also an excellent Southern Spanish wine called Sangre de Toro, perhaps the best with Andaluz cooking (paella etc.). Btw, I side with you on Whisky philosophy...