Many of us gone through lots of thinking and deliberation before making the decision to purchase any system or lenses. Suddenly u have some people putting their viewpoints and arguments and pro and con. And consciously / unconsciously participate in hours of lengthy discussion .. human nature . google it and u can find such discussions aplenty
As for equipments, IMHO, there is really no crime in buying faster lenses or equipments
I am not too bothered about people who purchase their expensive toys who do not make their mark either.