I generally use
doc validateattributes
in every public function I write initially. I rarely use a varargin style of argument input so ParseInputs is a bit over the top for my usage, but I have used it sometimes.
When I am writing functions to be called in a massively iterative environment though I generally end up commenting these out. I like to keep them there as comments because they act as excellent documentation as well as (when not commented out) validation, but when called millions of times the overhead can be excessive. Usual overhead for one-call is usually irrelevant for validateattributes. I don't know about ParseInputs though.
