Moose hit the bullseye.I've got a pretty fair sized pedal board capable of generating most any 'effect' that I could want to flavor or fill with, including a harmonizer... but I rarely use any of it - and that's what they're there for; those moments in an arrangement when it calls for something other than pure guitar/amp tone. Spice is nice.
Effect pedals aren't suppose to make a bad tone sound good. They're made just to be added in the right spot of a tune.
I'm also of the opinion that there should always a vast range of pedal choices, so that I can choose we to add a little something in a certain part of a song.