Why? You are holding a belief that works directly against your own self interest.

If it's a principles thing—I'd ask, what is good in this principle? What is the good in someone else taking credit for your work? What is the good in someone else divesting you of wages you could use to live or support further creative acts? What is the good in any of that whatsoever? What real harm is the protection afforded you by the IP causing? If you worry underprivileged people can't access your work, you can give it to them for free as the IP holder. I simply cannot fathom any reasonable abstract position in which not having IP would be good for you. Sure, if you hand over your IP to someone else, I could see wanting IP abolished, but that's on you. Thant's the same as the parent scenario only you actually got a say in the matter at least.