After my first birth I decided I was definitely having a Doula second time around. While DP was great managing my head space he had no idea what to suggest etc when things were not going as planned. If I had a doula with me then things might have been different.

Needless to say when I suggested a doula for the above reasons this time he was fine with it. I think it's the fact that they have seen many many births and DP has seen 1. The experience is a big factor in that the doula actually knows more than he does.