Ah, you learned your wine rules in Temecula. No wonder
Of course you can drink what you want. White wine with cheeseburgers if you must. But some wines pair better with certain foods than others. By sticking solely to cabs, you're missing out on the virtues of other varietals that may actually improve both the food and the flavor of the wine synergistically. While one's journey in wine may be most rewarding by following your own path, if your path is a simple circle and you keep going round and round where you've already trodden many times before, where is the reward?