I have been a divorce solicitor in the UK for 30 years, and I've seen firsthand how many people make stupid mistakes that make their ex-spouse angry and leads to longer, more contentious, and more costly proceedings than needed. There has been a marked decline in the use of adultery and drunkenness as grounds for a hasty legal separation in recent years, likely due to the proliferation of no-fault divorce in the UK. However, it in no way implies that they are less vicious. Make sure you don't make any major mistakes with the law when it comes to your divorce by following the steps in my article linked here.