I had special interest in younger children since I was about 9 - but back then I wouldn't call it attraction, I just felt very comfortable being around kids aged 3-7 (I developed normally and was perfectly alright around peers, there was just something warm about being with younger ones)
But if we talk straight up attraction, it sparked when I was about 13, was initially to the boys on the countryside and was predominantly sexual (and remained predominantly sexual for boys ever since). But then girls qickly caught my eye too, and I felt all sort of attraction to them - sexual, romantic, platonic...you name it. It was not porn that started this, although in my early years of pedophilia I did find some of the CSAM (not illegal in my country even for adults to watch, although since about 15-16 I do not do it out of moral side of things)
Thank you! It means a lot.
That being said, I had one free session with a competent specialist once. Unfortunately, I cannot afford their help, but this one session was already very transformative, as it was the first time I was accepted, face to face, by someone who is not attracted to minors themselves. Got me through a lot of emotions then.
I hope we'll have more of it, and I strongly believe a more understanding culture would be beneficial for everyone - including children who'll be more safe.