For those that want to dive in a little bit these are Adverse Childhood Experiences (ACE). It's not an end all be all chance that you'll develop something with a long term impact but the more you experience the more likely you are to do so.
https://www.cdc.gov/violenceprevention/aces/riskprotectivefa...
Lil Timmy falls down a well, or has a really handsy neighbour, or has to see someone get hit by a car.
Like, obviously, don't beat your kids, but you don't need to be superlative parent, esp. since a great deal of their education and raising will happen, essentially, in someone elses workplace (i.e. school).