If your lifestyle doesn't permit an intimate relationship, which is one of the best things about being a human, then you need to find yourself a new lifestyle.
I do agree with the GP that not everyone can just snap their fingers and "get a long term relationship", but for someone who has no other obvious impediments to one, and thinks they look at porn too much, my advice is to at least try. It seems obvious to me that the excessive porn is an outlet for frustration from not having a real relationship with a real human. There's only one reasonable way of solving that IMO, and that's going out and finding (or trying to find) such a relationship. Trying to turn yourself into Buddha is not reasonable IMO; people are supposed to have intimate relationships.
As to your other comment, have you considered people who have mental illnesses/disorders? Their lifestyle (in every sense of the word) would not permit a romantic relationship, too bad they can't just "find another one".