I think girls are most desirable between the ages of 12 and 18
What do you like about young girls?
I like to look at them sexually and they are really naive
Attraction can be complicated but you should stay away from underage children, not date them or have sex with them. If you are sexually attracted to children, you will be labled as a pedophile and you will spend time in jail.
It's not like they can date me.
Showing any type of romantic or sexual interest in a child is wrong and innappropriate.  It would be best for you to seek out therapy to understand why you have the feelings that you do.