because when I nick mself, the wound (while deep) has clean crisp edges and heals quickly with little care. Less sharp knives, or worst of all, sHArP knives leave jagged cuts, which scar (on me) and tend to get more secondary infections.
Not to start an argument, but I find this very interesting because you say “on me”. I seem to be the exact opposite.
When I cut myself cleanly with a razorsharp blade, I have to tape it to stop the bleeding, and then it still oozes blood for days before finally closing.
If I cut myself shaving, I have to stop it with a cigarette paper or a piece of tissue, and one usually doesn't do it. Those, I have to leave on the whole day because if I take them off any earlier (mindfully slow and careful, with plenty of water) it will bleed again like before. Actually leaving a bloodtrail, that's how bad I bleed. I can tell you I became very mindful when shaving and hardly ever cut myself because it's such a nuisance.
A rough cut rarely bleeds for longer than a couple of minutes on me and forms a hard crust that seals it off until completely healed. Very rare that this crust breaks before complete healing, even if I bang it somewhere because of not paying attention.
When it comes to scarring, though, I seem to heal very well. I once cut through my skin with a grinding disk all the way to the bone which was partly burned according to the the doctor. I have to point it out now and then people will say, after some investigation, that indeed they see a small scar.
When I was a kid, I had a bad fall with a motorcycle and was caught underneath it with the hot exhaust on my leg. By the time people got that thing off me, it had literally burned a small hole in my leg. It took ages to heal up and I walked around with the weirdest purple spot on my leg for years and years. Over time it developed little white spots on that bigger purple spot. Those converged into weird white skin (scar?) tissue. This was visible and that spot was very, very sensitive to sunlight. Until, with passing years, even that disappeared and people who knew me when that hole or purple spot was there can't believe they can't find any scar where that spot once was.
Working in construction and with metal all my life, I've cut myself many times but have remarkably few and very little scars in comparison to most of my co-workers. Some of them have huge scars where they once had a minor cut or tear. This must be your situation from what I gather from your post.
Like I said, wildly interesting to me, these differences in people (and chickens of course).
No infections either on any of my wounds my whole adult life. In fact, only one I can recall when I was a small child, a mosquito sting of all things, go imagine, and that actually got badly infected.
On the other hand, when it comes to tendinitis, tendinosis and such, I stood in the unlucky corner when they were handing those out. I've had more than my fair share of trouble there, but it seems to have settled down the last few years. Hopefully, I can hang on to that.