I completely agree (ironically enough). I
always seem to be taking a critical view of ideas, but I'm also extra diligent to base my opinions in logic and fact. Nevertheless, I can't shake the feeling that I'm just Mr. Negativity; I don't feel particularly inspired when I'm critical, but I can't let go of the need for rational thought.
It's fairly well-established that creativity thrives in an environment of support and optimism -- is criticism truly poisonous for success, or are we all just fooled by survivor bias?
(for example: let's say that 99% of ideas are bad, but 99% of all ideas are generated by blind optimism. Thus nearly all successful ideas are generated by blind optimists, but the survivors don't accurately reflect the success rate of optimistic thinking. If this is true, it's easy to be critical, hard to be successful, and the enormous successes are so rare, that they don't accurately reflect much of anything, other than luck....)