Why politics and ideology don't go well with philosophy?

- Maybe is because we nearly destroyed the world when unifying ideologies and politics with philosophy? - Napoleonic Wars, 1848 Revolutions, WWI, 1917 Revolution, WWII, etc... - All that utopian nonsense we - humans - created in the 18th and 19th century because we simply "could", we had achieved an unparalled level of technology and culture. It's not surprising that today - after the 1950s - we made "analytic philosophy" almost a religion to be followed. We have created a stigma towards opinions - that is what makes philosophy - just because we couldn't project in the world what we had written, and we became bitter, resentful, evil...