Look up porn induced erectile dysfunction. It's a slippery slope. Vanilla porn doesnt give you the same satisfaction it used to, so you switch to something a little more "out there," and eventually that doesn't do the trick either, so you find something even more, "out there." You're only 16. If you do this every single day then you are setting yourself up for sexual dysfunction when you're ready to be intimate with another person. You may find that you can't sustain an erection when trying to have actual sex. The longer you keep the habit, the worse it is to break. Most people have some kink or another and that's fine, but the porn itself can be a dangerously slippery slope. Don't beat yourself up for having a kink, but I'd recommend cutting back on the porn altogether, whatever the type.