PE - I have PE and i do not know why

I have PE and i have no clue why. I believe it may be because of when i was younger finishing from only being semi hard and watching porn.

im in the same boat , i started jerking off at a young age and it would be to porn and just as fast as i can. i think that is what has caused me to have PE my entire life, i am 20 now but have always had it and it has never improved, ive tried delay gels, spray, thicker condoms, being drunk, prescription medicine, tea, meditation and nothing works