Unhinged people don’t generally take the time to put estranged wives on deeds, generally get things in order and market houses for sale. Depressed people often do exactly this, I knew someone who had purchased Christmas presents for the family and carefully wrapped them before putting everything in boxes to make it easy for his family to take to charity shops or give to who he wanted to have them. It would have taken him weeks, in the aftermath he’d been to see old friends/visited family and done things to help others, outwardly he seemed fine, till he jumped in front of a train.
Suicide is a permanent solution to a temporary problem.