Puppies,

I can't say I understand your choice, but I don't have to. You have done your research and you have made an informed decision. That is more than can be said for a lot of women. So no, you shouldn't have to explain yourself to other people. It is your body, your baby and your choice. It is nobody else's business (ok, DH can have a bit of a say, too :-)

There is a quote in the movie "The business of being born" that really stuck with me: "we spend much more time researching our options when it comes to buying a car or even a camera than we do when it comes to birthing our baby". You on the other hand have done your research and made up your mind on what you think will be the best for YOU and YOUR baby. I hope you can find strength in that knowledge.

I have had a complication free natural vaginal water birth in a birth centre. But I still get people making strange comments because I apparently don't care enough about the health of my baby to birth her in the normal maternity ward and accept the drugs, etc.
I only mention this to let you know, no matter what you choose to do, there will be people who think they have the right to criticise your decisions and judge you because they would have chosen a different path.

One other thing I want to mention, though, and it has nothing to do with how you birth your baby.
You describe yourself as a very nervous person. Is there any way you can try and work on this? Not to change the way you birth, but so that you can be a more relaxed mum? Oh, this is coming across all wrong, I think. Sometimes it's hard to say these things in writing. I just feel that parenting can be incredibly stressful at times, even for those of us with nerves of steel. So it might help if you can find a way to deal with your nerves and do it now, before you have your bub as once that sweet little bundle is here, you won't have time to really concentrate on yourself for a while.
I hope you don't find this comment offensive, it wasn't meant to be...

All the best and I hope your C/S is going to be easy and without complication and that your recovery time is very quick and full of joy about your baby boy.
Saša