Why do a lot of ppl instantly connects crushing as sexualization?

Just this day I got 'called out' by someone because I said in my twitter that I actually have a big fat crush on Killua and Karma. Apparently its 'pe**philia' because I am sexualizing them?

I tried to clear the misunderstanding because I genuinely liked Killua because of his powers and I find him adorable, and Karma because I find him really handsome and cutely-arrogant. Mind y'all that those crushes started when I was still in ELEMENTARY. I suddenly became the enemy of humanity because I find fictional characters cool and appealing.