It's not worth saying anything about this post.
There are advantages to optimism that are worth considering, but some people are put off because they don't want to be disloyal to negativity. Optimism and pessimism are generally seen as opposites, but that doesn't mean they are mutually exclusive; learning optimism does not mean abandoning negativity. If that is what turns you on, stick with it. If you tend towards a pessimistic outlook, how about learning selective optimism? That way you can get the benefits and still be true to your negativity.