Jobs come and go, but the skills you learn through these jobs stay with you. If you're off the job market for a while, you will have a much harder path trying to get back in the game. As for spouse being here to stay...I hope you're right, but statistically speaking one can't count on the odds.

To be a full adult, it is important to be self-sufficient, meaning one can take care of ones own need should you become single again, and this includes being able to care for yourself financially.