Whatmeworry - apologies for assuming you were a man.
It was just your lack of empathy and understanding led me to the conclusion that you've never been pregnant or given birth yourself.
Your comments reveal that you think people who give home at birth are not only masochists, but also don't care very much about their baby's safety. Nice. 
"I don't really get the degree of hostility on this subject". See above!
"I gave birth in hospital because I thought that I would probably have a long and difficult labour (I was right there!)"
Ironically though, going into hospital appears to make many labours longer and more difficult!
"and I also was genuinely unsure of my ability to cope with the pain until I experienced it."
This is true of all mothers who book a homebirth, because every labour is different. Most first time mums who book to have their baby at home do so on the understanding that they can transfer into hospital for an epidural if they find the pain too much to bear.
On a personal note, I've had two long and difficult labours: first and third. Both well over 24 hours in active labour, both very, very painful (big posterior babies). I can honestly say that NOTHING that happened in hospital made my labour easier. It was more tiring, more boring, more worrying, less mobility. Just stuck in one room waiting for the birth to happen. Listening to other women screaming in next door. Horrible. The long labour I spent at home passed a lot more easily, despite being JUST as painful.