I did NCT who made out birth plans to be the holy grail of how your birthing experience should be. I, luckily, had a bit of common sense and just made a short bullet point list of a few preferences - I wanted to go to the MLU (which is within our hospital so only a lift ride away if things went wrong), wanted OH to tell me the baby's sex, didn't want pethidine or meptid, wanted skin to skin immediately after birth, wanted to BF if possible. Basic stuff. I was always of the view that I'd do whatever I needed for us to be safe and well and if that clashed with my ideals then so be it.
I got some of my preferences. OH told me the sex which was a lovely moment and I didn't have opiate based pain relief in labour but was subsequently high as a kite on morphine for two days after. But after a three day induction which was horrendously traumatic and could have been fatal to me and DD quite honestly I did not give a shit. I just wanted my baby here safely and for us both to be ok. We were, in the end luckily.
Planned c-section for me at 38 weeks next time as not allowed another v birth. Won't bother with a plan. If we don't find out sex again I'd like OH to tell me but other than that everything else I'll just go with the flow.
I think working in emergency services you probably have a slightly skewed view OP, and are less likely to have the first time mum 'head in the clouds' thinking that lots of first time mums have especially if they have been incessantly told what a wonderful experience birth is. It can be, of course for some but for lots of isn't. I think we do a real disservice to expectant mums by not telling them what birth can be like realistically. No need to terrify people with horror stories, that's just mean (I won't tell my birth story in detail to expectant mums unless they insist and I always want them it's not very nice or standard) but we should be making sure women are prepared, and that they know that if things don't go 'to plan' then it's not their fault.
Pre-birth I was asked (along with the others in my group) my by NCT teacher to see her next group when they were 8 months pregnant to share my story. Her last group did the same for us and we heard all positive, lovely stories. No EMCS, no inductions, no complications really. After birth, when she heard my story she didn't want me to do it anymore. The only two ladies from our group who were invited back was the one of us (out of five) who'd had an unassisted pool birth using g&a and other other who'd had a home birth. The other two ladies like me had complications and assisted births and were also un-invited. Sums up NCT for me really!