And the last thing I would ever tell anyone is to consider only manufacturers products. The after market has, in many ways, caught up with and even exceeded then in both quality and selection. And quite often with better warranties and service also. I am a Nikon shooter yet less than half my lenses are Nikon brand. In most cases because Nikon does not offer a particular lens, and in a couple of cases because the Nikon lens has been equalled at a significantly lower price point. I also find it almost impossible to recommend Canons lenses over aftermarket lenses because of canons refusal to offer more than a piddly one year warranty on their often grossly over priced selection.
Everyone has opinions and you should always stick with your beliefs, but you should do so with an open mind. THAT is why I could never agree with your statement.
Oh, and I have over 5000 posts so I guess that means I should just go away according to other posts you have made tonight?
I hope you can now see the fallacy, and danger, of making such blanket statements.