Porn atrophies the mind. The consequences aren't only legal. The reason is because it acts on your dopamine receptors rather than your serotonin or other forms of good feelings. The dopamine in the brain acts to "reward" us, so it is related to feeling like you're "winning". Other forms of joy do not require the same kick. Dopamine is the main thing that causes addiction. Addiction is trying to accomplish greater and greater feelings of reward. Because of the way this works, to cause us to strive always for greater heights, or more sex, or harder drugs, this aspect of the mind is central to what derails people's lives. So if the "law" isn't a good enough reason, maybe some research into brain chemistry will help you consider putting off all this sexual bullshit until you're old enough that you're hopelessly addicted to stuff already, like so many lost adults... pretending they know better than you, when they know full well that deep down you probably have a more firm grasp on some things than they do because you aren't as invested in anything.