If CW was unhappy with his life, for whatever reason, he didn’t have to stay with Shan’ann and the children. He could have separated and ultimately divorced her in order to start a new life with another person, or alternatively, remain single so he had no responsibilities other than child support such as the costs of day care, health insurance, medical or other expenses.
Life is all about choices. He chose to have at least one affair and possibly others. The worst choice of all was to murder SW, Bella, CeCe and Nico. This destroyed not only their lives, his own life, but in doing so he forever changed the lives of both families.
This reminds me of a Cherokee legend - Two Wolves
An old Cherokee was teaching his grandson about life.
"A fight is going on inside me," he said to the boy.
"It is a terrible fight and it is between two wolves.
"One is evil - he is anger, envy, sorrow, regret, greed, arrogance, self-pity, guilt, resentment, inferiority, lies, false pride, superiority, and ego.
He continued, "The other is good - he is joy, peace, love, hope, serenity, humility, kindness, benevolence, empathy, generosity, truth, compassion, and faith.
"The same fight is going on inside you - and inside every other person, too."
The grandson thought about it for a minute and then asked his grandfather, "Which wolf will win?"
The old Cherokee simply replied, "The one you feed."