Tired of the "There's already a business" Criticism

This seems to be the most reoccurring theme when posts about business ideas are commented on. Yes there's probably a number of competitors, ok? It's always said as if it's the end all be all reason to just walk away from any pursuit when in reality most people should know competition is expected and healthy. Sorry for the rant post but it's exhausting to see on every post about a new startup. Competition is good, stop using that as a reason to not pursue your business