Some people think characters in anime/manga are hot because they are ideal. Meaning that if we, as human beings, could have the guy/girl of our dreams they would be like the characters from our favorite anime/manga. Unfortunatly this isn't good because if we only look to our dream guy/girl we will miss out on meeting a great guy/girl in real life. I personally crush on anime/manga characters but I don't let that close my eyes to the real life guy/girls around me. I use thoses crushes to write fanfics.