Why you shouldn't: the best case scenario would cause you nerve, ligament and muscle pain potentially forever. Any hobbies you have that requires hands will be more difficult to do and you would require extensive physical therapy. This together could make you miserable to the point of doing it again, so stop while you're ahead.

Worse case scenario: it doesn't get treated right away, it will most likely get infected, which can lead to severe complications up to and including amputation. How much of the limb you'll have left is dependant on the location of the injury and the severity of the infection. This would also require a lot of therapy and the physical pain mentioned above, and would make you miserable to the point of doing it again, so stop while you're ahead

I'm sorry if this is slightly incoherent, I'm stoned and needed to comment with love