If you like porn, porn is great. If you enjoy using it in a relationship, then it is totally healthy. If you don't like it or find yourself obsessing over it to a point where it bothers you, then it isn't good for you. If it is bothering your relationship, it isn't good for you. I don't think there is anything about human sexuality that can be blatantly labeled as "good" or "bad" so long as all parties consent to it. It's a personal thing like I hate pickles but that doesn't mean it is bad for everyone. I can't stop myself from eating an entire bag of Doritos but that isn't the Doritos fault. It's a personal thing.

Why do you like porn better than sex? Do you feel like your partner doesn't know how to please you? Is there something in the porn that you aren't/can't recreate in real life? Again, I can't make a blanket statement.

[EDIT] Oh and when about 90% of the male population watches porn, saying that porn and rape is connected is not at all statistically significant.

I also enjoy porn personally.