The "walking womb" point is a very interesting one. I (fortunately) don't have any experience of miscarriage, but I do of stillbirth.
For my husband it was clearly the worst and most distressing time of his life. He had invested a lot of emotional energy in the child, and felt he had to keep himself together for my sake. Because of this he found it hard to grieve and whereas I had a clear 'job' to do, he had to get on with our life. I am not undervaluing this at all, but do think that the emotional investment and sense of loss for me was worse, if it is quantifiable. I say this because:
*He did not carry our babies. He didn't go to all of the antenatal clinics, and therefore doesn't have the amount of distressing memories that I do (eg just before scan showing DTD1 had died, a doppler at the the GPs and midwife where they both heard two heartbeats, however the post mortem showed that there could only have been one). He didn't have the worry and pain of pregnancy that I did (no Spd, inability to sleep, deprivation of going out, drinking, eating certain foods etc).
*His body is not distorted and permanently damaged from carrying twins.
*He didn't go though premature labour and the pain involved.
*Although he was there to support me, he didn't undergo the degradation and fear that comes with emergency surgery.
*He didn't have to stay in hospital, expressing milk, learning to bond with a premature baby whilst trying not to grieve. (having said this, he wasn't given the opportunity, which mean that he found it very difficult to know how to handle the baby when she came home).
*He didn't have to undergo the shame and intrusiveness of all of the tests that come with an unexplained stillbirth.
*He was able to return to work and separate the death from the birth, whereas I had to get on with caring for a premature baby.
*He didn't get PTSD.
*He doesn't now have almost insurmountable fear at the thought of another pregnancy.
*When we looked into a case for clinical negligence, because I was the patient, I had to make all of the investigations and fill out all of the paperwork.
*But most of all, he doesn't feel guilty that it all happened, because he was witness to it and it didn't happen to him. It is clear to everyone that there's nothing he could have done to prevent it.
Sorry to ramble on about my particular case, and I understand that all women, men and children are different, but given the danger, pain and responsibility that comes with pregnancy and childbirth, I fail to see how a man can be as invested in it as a woman.