Y'know, burgers ... the good kind. Freshly ground, good quality cuts of beef. Not fast-food burgers in other words.
No ... is what I say.
I don't like condiments when I have a really juicy burger that's just freshly ground, hand formed, loosely packed, and cooked to just this side of medium rare.
I don't need fancy housemade ketchups (even though I love me some ketchup on just about everything else), nor do I need salsas, mustards, mayo, etc.
They just get in the way.