Weekly poll # 12 : Flash or no flash for street photography ?

Do you only use the light that the street gives you or do you sometimes need a little help from a flash ? Or maybe,...
Do you only use the light that the street gives you or do you sometimes need a little help from a flash ? Or maybe, flash is simply part of your work routine for a special effect. Flash or no flash ? (use the comments section to provide more insights on the reasons why you might or might not use it) I myself never use flash. I prefer to look for situations where I can take advantage of natural light, and anyways, it would be awkward to mount a flash on a Leica, no ? ;) Paris - Leica M9...