I'm looking at Which are must have lenses for Canon?
There are a few useful answers here, but I think overall it's clear that the intent of the question doesn't bear fruit in the answers. Not to pick on the person who gave this answer personally, but does anyone really think that a 50mm f/1.2 lens is a "must have" for the general hobby photography situation described?
I think it might be just best to close this thread (and maybe re-ask it in a more pointed way), but might be more appropriate to use the Historical Lock mechanism (see What is a historical lock, and what is it used for?).
What do you all think?