Yep, me too. Convincing, isn't it?
This is true, but nothing you've said here leads me to think your experience was much different to mine or the other people I knew at the time, some of whom I still do know. The fact that there is no objective way at all to tell is what makes your (and mine, back then) blind faith - it's an interpretation of a subjective experience.
What I can tell you though, is that, young and naive as I was, I was absolutely 100% sincere when I 'repented of my sins' and asked Jesus into my life to be lord and saviour, so, if what I then experienced was fake, where do you think your god was? Why would he allow that to happen?