You've noticed you have a problem - it's not that you cock is too small (but it might be) it's that it's too quick. You are a premature ejaculator. After cumming and cumming quick to porn your whole life, you've become conditioned to cum in 5-10mins or less. You could NEVER please a woman with your quick dick. I have a challenge for you - why not try the opposite? Have you ever tried gooning? Take the orgasm away - orgasm is no longer the goal - but rather, how long can you simmer? Perhaps you'll learn to love it, and cure yourself of your quick dick problem...