Given that I saw an obstetrician once through my entire pregnancy, what need do I have for them?

I saw the same midwife every appointment, there was not an obstetrician in site during my labour or birth and thanks to me being informed and having brilliantly supportive midwives and birth support, i had an amazing eighteen hour birth with nno drugs, no tears and no complications.
Not many people will say their eighteen hour birth was amazing.. its a long freaking time.