I think you'll find the responses are all over the gamut.
when my neighbor had a guy who would do the whole car for $3,500 I was in. When he said the guy won't return his calls, I was out (otherwise about $7k).
Can I afford the $7k? Yes.
Will I pay it? No - same reason I got an S or MS or LR or whatever it's called, versus the Plaid.
Yes, I regret bits of not getting the Plaid, but I feel the LR is more than good enough for me.
Similarly, yah, I think PPF is "the cadiallc" (well, back when cadillac was really good" of coverings - I think there is no better protection for your paint.
however:
1) I saw someone had damage to their door, and had to pay more to get PPF reapplied (not saying that's unfair, just saying...that.
2) supposedly PPF can be removed with no damage. I think that's probably true...but what if it damages the underlying stuff?
3) I went ceramic. I figure it is a little stronger (they claim a lot stronger) than just wax, or even the clear coat. I will say after some rain, it seems to bead exactly like wax. I don't see any difference between ceramic and wax, but maybe it's there and i just can't see it.
4) though people malign the tesla paint, clear coat, and for that matter lights, I have seen some videos, etc. that say the tesla paint and clear coat is pretty much the same quality as most other manufacturers', i.e. it's not supposedly inferior. Yeah, I'm sure some cars could have underspray, but I dont' think that's the norm.
5) I plan to keep the car 3 years. If there are some paint chips, so be it. I already rashed both rear rims (and yeah, it bothered me, but not enough to have them redone - I have like 2 years and 350 or so days to go - i'm going to have a lot more going on - dents, nicks, parking lots, etc.)
6) I've owned and sold or returned leases on many cars without PPF (i don't think it even existed until a few years ago). I don't remember any of them looking like swiss cheese on the paint. Sure, some rock chips. and touch up paint did a 95% job.
At the end of the day, my personal opinion is PPF is like an extended warranty or insurance - it can give peace of mind. If $7k on a $100k or more car is worth it to you - then go for it. To me, I decided I'd rather pocket the $6,725 difference between PPF and the $275 clear coat I had put on (if i did my math right).
I think a car with PPF will look better than mine after 3 years (unless the PPF gets damaged, and you may still be able to fix it with a hair dryer). However, on the resale, I'd be surprised if you get $500 more. If the choice was "your car with PPF" or mine without, and they were the same colors, same miles, etc. sure, if I was the buyer i'd go for the PPF (for the same price, sure!) but otherwise not sure i'd pay a premium.
just my .02