Laurent.A UV FILTER DOESN'T PROTECT THE LENS FROM IMPACTS
I think we're kinda on two different pages here (you - large impacts, me - light, scratch-worthy "impacts"), but I'll respond anyway.
You are being overly protective.
tl'dr: If a lens gets hit hard enough to break it, a UV-filter will do very little to stop it.
I have to respectfully disagree with you here, for the most part. I wouldn't deny that it's anal to use one for protection but who's to draw that line anyway? Besides, anal protection is definitely better than no anal protection, at least in my book...
I fully agree that it won't do shit in the case of a strong or head on impact, as your video proved. But that's not what I'm worried about. It's not every day you have a lag bolt falling directly on your lens. For more awkward, lighter, reasonable
impacts that could, for example, dent the outer rim/threads or scratch the front element, I still think a filter has its place in protecting the lens. Like I said, it also makes cleaning easier - especially if I don't have a nice cloth handy. I don't mind using my t-shirt to clean a filter but would be hesitant to do so on an element.
It's also worth noting that I simply like the look of a filter over most bare lenses.
So at the end of the day: no, a filter certainly doesn't offer a condom level of protection - maybe more like just pulling out? But since putting a condom on a lens would definitely affect image quality, I'll stick with a filter.