Sex is one occupation that can really take over, if given the chance. Or they say that it's an innocent way to experience pleasure and hurts no one. On the surface, these arguments sound reasonable. Certainly pornography harms every individual involved in the making of it, and women who dance in erotic clubs, or who prostitute themselves, are not the glamorous beautiful people we are shown in movies. Many lives are adversely affected by our modern preoccupation with sex.
Most men do think about sex often, and want to have sex on a regular basis.
Depending on your age, you are probably experiencing the highest levels of testerone you will ever have. And certainly, men have a strong urge to mate, which is as God designed it. But, it should be possible to do without sex, when necessary. It sounds as though you have simply fallen into a bad habit. Breaking any habit can take a lot of work.