Depression comes in many forms and those who have suicidal thoughts and tendencies often never show them. Often times people with suicidal mindsets end up living normal lives where no one around them even knows they are struggling and even often doing everything to live a normal life. Of course he got married and had kids, people expect that to bring happiness. Often times those just end up being a bandage on a bullet wound.Why marrying and having 6 children when he thinks about suiciding from the beginning? Seems kinda unfair towards his family in my opinion.
It's not a selfish action.