Why are negative subject matter questions the most popular ?

I’ve been having a look round and also posted a couple of questions with a negative content and it is apparent that negativity makes for a better response when asking a question…..subjects on death,violence,abuse,mental issues, go down a bomb !(sorry couldn’t resist).
Happy easy going subjects apart from your favourite current song or best recipie for carrot cake never get a look in…...why does negativity dominate life so much and why is it so popular? If happiness is the ultimate goal the why do we celebrate doom and gloom.