I think I must be an exception to the rule. I had an epi. I didn't realise at the time. I didn't feel it. DD was coming out very fast (I saw on my hospital notes recently when seeing my ob for #2 that it took just 13 mins). I knew I had stitches afterwards, I thought it was because I tore. It wasn't until I saw my hospital notes back in my room that I saw 'epi' written and realised what had happened. It healed very well.
I say that I'm an exception to the rule as I honestly don't mind it was done. I think if I knew they were doing it I would have been more nervous. TBH, my main wish for the whole birthing experience was to have DD in my arms safely and that happened. TBH, if I had the exact same birth with this bubs I wouldn't care, I just want my baby.