I have 17 month old mono-di twins and originally wanted a home birth as well.  However, after reading a lot about the risks of TTTS, and acute TTTS during birth there was no way I wanted to risk the health of my babies.  After a super stressful pregnancy because they were mono-di and the possibility of TTTS, i just couldn't bear the thought of carrying them to term and then losing them during delivery.  Granted, I had an AMAZING team of doctors who supported any decision...