You can get addicted to any pleasurable behavior. The main issue with behavioral addictions is who they actually hurt. Porn addiction may cause physical problems if it gets extreme, but the real issue with it will come from you not meeting societal obligations far before that happens (by not working overtime enough to make rent or making more workers as a good wage slave should). Thus, porn addiction is more of problem for capitalism than for the individual’s health.
You can get addicted to any pleasurable behavior. The main issue with behavioral addictions is who they actually hurt. Porn addiction may cause physical problems if it gets extreme, but the real issue with it will come from you not meeting societal obligations far before that happens (by not working overtime enough to make rent or making more workers as a good wage slave should). Thus, porn addiction is more of problem for capitalism than for the individual’s health.