but this is a different case of sexual attraction, this is definitely outside the realms of normal and a psychological issue. You are attracted to someone years below you in age. Usually for reasons that aren't physical. Granted, I will give you some creepers are just naturally attracted to kids. But since this isn't considered "normal" since its so rare. Its usually something in the person that is not right or imbalanced. Again, psychological issues. Anything thats not normal is usually a problem. Not always of course, but I think its safe to say someone who wants to kill people for fun has a mental issue. People who hear voices in their head have issues. Being sexually attracted to animals is an issue. Being sexually attracted to a child...is definitely an issue. It's not normal.
And before someone says "well homosexuality isn't considered normal". I believe it is. While a minority, there are still quite a few people who are. Its not a rarity. Its not "weird" to be attracted to the same sex. While some ignorant people will be like "ew" because its definitely different, this is just a perspective.