I tend to be extremely particular about paint on my cars, but also fairly pragmatic. I noted that my rockers are chipped up as well at ~5000 miles, though this is my daily driver and slogged through a sloppy winter here in the northeast. I consider the rockers in the same vein as the front bumper - they're just painted plastic so the chips are purely an aesthetic concern. For the amount I'd pay to have PPF professionally applied, I could also have the pieces removed and resprayed by a reputable body shop. Moreover, a really solid whack that is enough to damage the PPF would require repair of the plastic piece PLUS replacement of the PPF. Since the PPF has a finite life span (around 5 years from what I've read), I can get the rockers repainted once every 5 years and roughly break even if the damage bothers me enough to warrant a repair. As my car is night blue and the plastic underneath appears to be black, the chips are almost unnoticeable on my car. If I had a lighter colored car it might bother me more.
I'm not a huge fan of PPF in general after having seen two identical red Ferrari 458s parked side by side at cars & coffee. I was staring at them for a few minutes trying to figure out why the paint looked odd on one of them, only to figure out that the "odd" one was fully wrapped in PPF. I know the film is much better now than it was years ago, but to me it still gives an appearance that is slightly off.
If my car was a garage queen or limited production model (GT2/3/4) I might feel differently, but as my daily driver
and a car that cost about the same as a nicely optioned 3-series BMW, I've accepted the fact that it is going to get chips on the rockers and front end.