[Rover]

I am with  Rover, built in hoods are a bit silly, for a very obvious reason. Hoods have a protective role against impact, next to protecting the front element from bright light from outside the FOV. When you ding or break an add on hood, you can just replace it easily. When you ding the built in hood, you have to get the lens repaired. Luckily I have not had my 135mm Nikkor with built in hood get into an accident (it has a built in hood), but my 70-200mm Canon's hood saved my lens when I dropped the lens, and only the hood needed replacing.

The main reason to use a hood is to avoid flare and this is exactly why I use my lenses' hoods for
I've never banged a hood or replaced one due to damage.
I'm not sure what you guys you do with your gear, wrestling or Spartan races maybe?

With long years of working in the field, or even without one, stuff tends to be dropped or banged around something. In my time, I've needed repairs for impact damage 4 or 5 times, and had at least three smashed filters. Several more with glass knocked out of alignment within the frame.

Just today when shooting on a construction site I've seen the gate swing with the wind and do a nasty thing on a chick photographer. She ended up knocked off her feet, bruised and at least the filter on her Nikon 24-70/2.8 got blown to smithereens. Maybe the lens is damaged too. Smartphone screen also likely smashed. The D4 (or similar) body has, conversely, blown a hole in the pavement, in all likelihood.  She had no hood on the lens.