I've detailed my car multiple times.
The pits, like rock chips, are something you have to think about. As mentioned earlier, if you remove the UV coating by wet sanding/polishing, you'll need to do something about protecting the headlights.
If you're like me, you will probably just learn to live with some pitting until they get out of control.
'11 BMW E92 ///M3 - ZCP and DCT
'15 Ford F-250 - Lariat, 6.7 Powerstroke Turbo-diesel