I had DH there both times. I also had Mum with DD1 and a good friend of mine with DD2.

The reason I chose to have someone else with me, was simply because DH can not handle me being in pain, he can not focus on what I want. He just wants to 'fix it'.
With DD1 I was induced, and had my Mum there for her first grandchilds birth but also to support DH, he is a sook
With DD2 I wanted a no drugs birth, so I knew I needed someone who would be there for ME, and keep me focussed to get the birth I wanted.

Its YOUR birth have who you will!!