I do not really care for tabs vs spaces, except in Python, where tabs are obviously the appropriate choice. For conceptual simplicity and orthogonality, if you

I do not really care for tabs vs spaces, except in Python, where tabs are obviously the appropriate choice. For conceptual simplicity and orthogonality, if you want to treat python programs as text files, and deal with them using standard text processing tools, it is much more comfortable when the indentation is marked by a single character. Apart from that, I never cared if people used spaces in other programming languages (as long as it was 8 spaces per level, of course). But this reddit post highlights an important reason to promote tabs everywhere, not only in Python.