I guess I say, to each his own. That thing will still probably do damage to wood and be happy doing it. However, the valuable patina on furniture isn't typically the result of misuse. I understand that a tool is a tool and so it gets its character from use, but if an old table has broken legs, it's hard to say it has attractive character. My whole knowledge of antique things comes from watching 5 whole episodes of Antique Road show, but it seems a common theme is, broken takes away value, "patina" adds value. Also, the damage that can be done to an axe, while possibly adding character, does also hinder its usefulness. The heal and toe and their respective geometry had a purpose, for instance. This axe got all that valuable character from being uncared for, mistreated, misused, and abused. I'm saying, the antique kitchen table probably didn't get its value from being beat on as a work bench and half its legs broken. So I guess I don't fully understand the temptation to preserve the resulting damage from abuse for any other reason than, you want to. Which in my mind is a perfectly good reason. Without more evidence, there isn't much reason to believe that it's old, or even hand made, but certainly no intrinsic reason not to return it to functionality. And finally, I think it's perfectly reasonable to be concerned that the abuse that metal has seen has compromised its integrity. Abuse isn't patina to me, but as far as I am concerned you can use it and enjoy it in any condition for any reason that suits you and you don't have to explain it to any of us.