Can someone tell me why this always happens to me? Every time I finish fapping to doujin, I come to think I don't need this boring crappy drawing any longer and then delete it from my HDD. I even think it's kinda filthy and disgraceful. But a few weeks later when I run into the same doujin popping up on /a/, I eagerly ask for the link, regretting deeply what I have done. It's not I didn't enjoy them or have only tiny space in my PC. I just fall into the wrong idea "I don't read this again anyway." How can I stop this stupid, endless cycle?