I was the opposite and would do either of my childbirths again.
First was a hypnobirth, baby was in perfect position and very low down, contractions were manageable with time between, and from first contraction to baby born was just over 4 hours.
Second was an assisted delivery as he was high risk, I had an epidural in case I needed an emcs but he came out in 3 pushes with the help of a ventouse.
That being said, the pain of contractions between both babies was very different. With the first, he was well engaged, head down and in the perfect position and contractions were well spaced and although intense I could breathe/moo through them.
With dS2 he wasn't properly engaged, not as low down, and I had the same pain at 4cm with him as I had at 8cm with the first. And as they say, no two deliveries are the same!
The key for me was the fact that I was listened to by my OBGYN and I knew I could ask for (and receive) drugs if and when I wanted them.
But I never felt that it was the worst pain in the world, but it's so personal and doesn't diminish the fact that others experience awful pain (and are left to "handle" it themselves without pain relief which is frankly barbaric).