A very large proportion of impacts to the head happen to the front...your face.  A full face or modular (system) helmet offers protection.  Even if your face ain't much to look at now, it'll probably be worse after after skidding down the pavement.

Theres a drawing of a helmet with impact zones on it & in each zone, the %age of impacts in that area. The chin takes the highest %age of impacts. If I hadnt been wearing a flip face HJC, instead of that "normal" helmet with the plastic face shield, I would either be dead or so mangled it would be a horror to not be dead.

34.6% of impacts are "On the chin". Or, just over 1 out of 3 impacts the head gets hit that part of the face. I saw a guy on his knees in an intersection. His face was gone from about mid nose to the throat. No lower jaw left that I could see. I dont know how he came out of that, but that was a life changing event. I dont know if he was even wearing a helmet, I just have that part of the pic seared into my mind & No, it wasnt a "Kodak Moment".

98% of all statistics are made up.

But on this one I would have to think that the chin does take the most damage.

Aww, Heck, Routy, you'll be FINE, as long as that 1/2 helmet is the front half..

Ive totalled 3 bikes. The first 2, no helmet. The first one, IF I'd had one on, I would been killed, because my neck would have been severly broken, since I landed on a shoulder & the side of my head. Would been like a hangmans noose, snapping it.
The second crash, my head never touched pavement, or anything.
The third, however. I had a flip face helmet on & left a big dent in the cab corner of a small pickup. The strap drove into my throat hard enough that swallowing was a conscious effort for a couple of weeks & I had a split lip (2 stitches worth) from the helmet flexing in when I smashed into the truck. So, One, I woulda died wearing one, one, didnt matter & one, the helmet saved, if not my life, a tremendous amount of pain. You may never even need your helmet & I hope you never do.
May your choices lead to a long life.

I checked the speedo just before I rolled off the bike. It showed 58 MPH. I was in Louisiana, home of the 70 foot wide, 4,000 foot tall pine tree.  Obviously an exageration, the point is, if you go off the road into a place where trees are, you will not miss them, as they are so closely packed you cant see the sky. It was dark & I was out of control & all I knew was there was a grand liklihood I would hit a tree if I didnt stay in the ditch, so I rolled off the bike instead of staying on & riding it out, as I had blown a turn. As I rolled away, I realized I hadnt turned the bars to make sure I didnt get into the bike, so I pushed it. That stopped my rotation. I had planned on landing on my back & pulling the shoulders forward, to make the jacket pull tight & slide. Instead of the back, I landed on the right shoulder & side of the head. That folded my head over so hard my ear was crushed against my left shoulder. had a helmet edge been in there, my neck would have snapped. As it was, I suffered for about 10 years before I went to a chiropractor. Agter seeing about 6 of those guys, on X-rayed it & showed me the vertebrae. They were sitting like , say you take your fists & aim them together, then offset them a knuckle. Just a little more & I wouldnt have walked out of that ditch.
That impact launched me. I came down on my forehead & plowed some soft ground, thinking" Man, If I hit a rovk, Im screwed" Literally, thats what i was thinking, then the lights went out. The bike, an RD400, made 5 endo flips & was totalled. All the grass stains were on the upper body & I was really sore.For a long, long time.

As it turns out, I was in a clearing. Had I stayed on the bike & ridden it out, I would have been in a freshly plowed field.. CRAPPOLA!!!

You could do like the guy in Cat Ballou & have a silver one made. Or get one made now & wear it, like a nose helmet.