Yep. There used to be many more injuries in our recreation level (non-contact) hockey than there were in full contact. I guess part of the reason is that you expect to get hit in contact hockey and you brace and prepare yourself for it.
The other part is that we were a bunch of idiots that expected to be able to play as well in our 30's, 40's and 50's, as we did when we were in our 20's.