Mastubating to porn too much???

I'm 18 and I've been mastubating to porn for about 2yrs now but I've been watching it a little longer than that. I've been wondering if mastubating to porn too much can affect your sex life later on. I've never had sex or a boyfriend and I mastubate about 2-3 times a day. I've heard that mastubating to porn a lot can make you only get turned by porn and that it can reduce sensitivity down there. Is this true and does anyone have any personal experiences??? I'd love any advice anyone can give me x