I don't think it's easy to get divorced. OH and I have been together 2 years, before we got together him and his ex were separated but not divorced because of the expense etc. 2 years we've lived with this woman's bitching refusal to divorce him unless she gets most of his pension pot as well as the entire equity from their house, which he still pays for and she still lives in with their children. We're in serious debt because of her demands already. A divorce won't be granted until the financial shitz gets agreed, and she's making that impossible, without going to court - which would be financial suicide.
Also - if people want to part there is no government bullshit that's gonna make them want otherwise IMO. In fact, being forced to do mediation and things has the potential to push people to resent/hate/despise each other all the more.
Honestly I don't think all that many people resort to divorce without having worked at things already - it's not the first port of call at all, more of a last resort which should not have further pain, anguish and bullshit added by beauraucracy as it's bloody well painful enough to the people with no choice but to be involved as it is.