definitely not.... when my ex and I divorced, no kids I got pretty much everything I asked for (house was sold and I had the small amount of profit from it) because my ex was in a highly paid job and had a new partner with a similar income and I was a student nurse.
My solicitor also wanted to go for a chunk of his pension but I wanted a clean break. I would say however it is much better if you can agree the division between you as it got quite nasty when the solicitors were involved. Also the fees racked up quite quickly.