A lot of people don't properly spice it or choose a good cheese blend for it. Mix some complimentary cheeses, I like gruyere, gouda, and cheddar sharp enough to puncture the hull of an empire-class Fire Nation battle ship, leaving thousands to drown at sea, then include some mustard powder, spicy and smoked paprika, fresh ground pepper, and whatever other pungent spices your soul yearns for. Top it with panko fried in butter and too much garlic.

Or you just don't like the stuff. But yeah a lot of people make it basically flavorless