If you want divorce, go for it. Living or working in circumstances which stress you is doing bad karma. Many people shy away due to social stigma or worry about children. These are all excuses given by mostly cowards who don’t want to go through legal procedure or pay alimony. Kids will be happy only if parents are happy. Parents who continue to suffer in estranged marriages are setting wrong example for kids to follow and suffer similarly in their marriage also. It is better to divorce firmly, respectfully and amicably as much as possible rather than endure misery and sufferings for life.