I had home birth with dc2. Dc1 was nearly an unplanned home birth due to fast labour and overcrowding in my hospital which meant they kept saying to stay at home. Patronising MW on the phone saying "I know it hurts but try and last out longer at home" and at the same time I felt I was ready to push I was like "FUCK IT IM COMING IN". It delayed the birth as if if had a home birth first time round I would have had him about an hour earlier.
With dc2, too many of my friends were doing a merry dance back and forth to hospital to be told they needed to go home. I even knew of one baby born in an ambulance on a main road after being sent back from hospital. If you could just check into the mlu when you know you're definitely in labour and be left to it it would be fine but you have to be in 'established labour' which for me I wouldn't have known when that was and birth could have followed quite quickly after.
So for me an unplanned home birth was the worst of all worlds whereas a planned home birth meant I got 2 mw support and can transfer to hospital any time I like (10mins by ambulance).
First birth was quite traumatic, just used tens. Second time round I had a pool for pain relief and g&a to help with delivering the head. It was much more pleasant. Oh and I didn't tear despite having very big babies. First time round I did because I'd lost control and was in a feedback loop of panic and pain grimly focussing on getting through delivery in a primal unthinking way.
Second time round being relaxed and using the pool made it much easier to be in control and deal with contraction pains positively and productively.It was such a strange feeling lying around in my own living room in a big paddling pool. Pain free and chilling out waiting for another contraction.
Anyhow to get back to your question. Why choose that. Well it wasn't for some wiffle waffle "lovely experience". It was a medically sound decision based on my first birth experience. I'm similar to my dm who also had 2 home births.
I'm not going to preach my philosophy of natural delivery and active labour to you. I think medical intervention a wonderful thing and support it where necessary. I think there's too many women now who are forced into a cascade of interventions and the awful experience of crash sections. You sound like someone for wohm medical intervention was a necessity come what may.
Btw If you read up you'll find out that home birth is statistically safer. And there's tonnes of write up of all that can go wrong in hospital births, particularly due to over stretched MWs and crowded labour wards.But I understand that based on your experiences it sounds like a risky gamble.
I echo what others say about getting a proper debrief. Try the NCT if you not getting any help from the NHS. Given what you've been through it sounds like you're at risk from PND.
I hope you can come to terms with your experience soon 