Ok don't think of it as having to be painful, and don't underestimate yourself!
I am the big wimp who (before labour) used to stub her toe and well up with tears, or bang my elbow and well up... Well you get the picture. I was such a huge wimp, and when I said I wanted a home birth without pain relief (if possible), I was laughed at. My friends and family thought I was nuts.
I sailed through my labour and birth. Don't get me wrong, it's not easy - I found it challenging, intense and harder as I got more tired, but it was AMAZING. I loved it, I was so comfortable and relaxed in my own home. And if you're worried about noise, none of my neighbours heard me and we live in a flat. I wasn't screaming, kind if low groaning but that's as far as it went. I had no drugs, found my birth pool incredibly soothing and it's own pain relief.
It truly was the best experience and I firmly believe it was so because I was positive and didn't believe that I had to be in pain. It doesn't have to be painful. The best labours and births are so because a woman is willing to le go. I just allowed my body to do what it wanted to do. I didn't let midwives tell me when to push or when not to, I refused (in the nicest possible way) to be internally examined because I didn't see the need, my body was made for this process and it knew what to do and when.
Now, there are certain situations which will mean that a labouring woman will need assistance. But these situations are reduced when you're at home and not distressed. If you are in difficulty midwives will spot it early and transfer you in plenty of time. You should also bear in mind that when you birth at home you have two midwives with you throughout. They're not going to miss anything because they are entirely focused on you.
Oh and now when I stub my toe I say ow, but I don't really mean it, doesn't effect me in the slightest these days!