Randomly thought of this. Shouldn't people break their hands, feet, or other attack thingies when they punch Wolverine? I'm sure some have, but people like Spiderman and other not amazingly durable people usually don't break their hands when they put in full force. Overlooked writing or actual reasons?

Depends on the writer. There are showings of swords and metal weapons breaking on his skull or a super strong character like Kaine talks about almost breaking his hand after punching him. But we have more showings of people just punching him and it not really even being mentioned.

they usually do

Maybe he rolls with the punches at times so he doesn't break hands like what spiderman does