I am on my 3rd car ownership, and never once I felt there is need to do any coating. Not even wax.

- Never treated with any coating or wax
- Never been polished
- Park outside under the sun at home
- Park outside near tree at office. Somedays will be covered with tree saps and other tree stuff. Somedays, will be covered in bird shit. Birds really love to rest on those trees. Partially under the sun.
- All cleaned at car wash using whatever cleaner that they use.
- Usually washed once a week (coz of the bird shit).

Apart from scratches, after car wash the car paint looks as normal as any other cars after 6 years.

If you intend to keep your car for over 10 years, then perhaps coating would be worth it..