How much is it costing? 1-2 lakh?
Sab shashka hai. If you have money which you want to throw on some shashka, then sure. But all you have to do is weigh the pros and cons and make your decision.
Self healing ppf? More monies
doesn’t let your paint scratch? Khudi socho, whenever you sold a car, did anyone care if your paint had marring?
Beads? Weekend pay wax kar lo bhai
If you’re in lahore, can you go without getting your car dinged and scratched? If yes, go for it, if not, ask yourself what is the utility of this ppf?
Meinay high end cars pay suna tha to protect the paint from road chips n etc, yahan hum logo ko civic sportage pay pagal banai ja rahay 
Maybe someone else sees more utility in getting your car wrapped in ppf, but for me, the cost far outweighs whatever benefits this will bring.
Back in ‘19, i ordered 3M 12"x72" - Sheet of 3M Scotchgard Pro Series, cleaned my old vitz headlights and had it covered with this ppf and to this date the sheet hasnt oxidized and the headlights are crisp and clear. It costed me $43 but was kinda worth the money for me. Tab bhi yeh bht mehnga tha, aaj tau aur he zada mehnga kaam ho gaya hai.