> Tabs vs spaces don't matter they are equivalent.

Just to nitpick (because what else is this thread about? :))

They aren't equivalent! Tabs carry more semantic information than spaces. 1 Tab character == 1 Level of nesting

Space-based systems _can_ provide the equivalent semantic information if they are 100% consistent.

...but part of the argument in favor of spaces is that they allow an escape hatch of the strict indentation in order to allow pleasing visual alignments.