Should it be so difficult to get divorced?

Going through the process of divorce, I am often struck with the question: how come this is so difficult? Although it's not exactly stress-free in most cases, neither emotionally or financially, to get married it's such a simple process. If you wanted to, you could have a cheap, simple marriage and be recognised by the law as a married couple in no time at all. The Guardian  wrote that it usually costs £7500 but you could easily do it for under £1000. But with divorce, it's such a needlessly complicated process. You obviously can't remove the emotional distress from it, nor should it be