I'm lucky - I get my bacon from the local smallgoods shop, which cures its own, and it's BRILLIANT! Thus I'm with Hairystick on this. I do prefer wholegrain bread, though.
If you're not so fortunate, and have to make do with the cryovac-ed, plastic-encased rubbish from the supermarket, you probably need something to give it some taste. Otherwise, just add bacon ...