Because you'd need to re-educate hundreds of millions of people, and it's a pretty weak message: "this symbol of hatred and genocide has other meanings, too!"
... and you'll be playing into the hands of people who want to get a swastika tattoo and then pretend they didn't mean any harm by doing so.
... and you'll be playing into the hands of people who want to get a swastika tattoo and then pretend they didn't mean any harm by doing so.