As you said, pool isn't as important as other things in your life.
Instead of being frustrated by pool, why not use it as the release in your life?
I'm not married, have no kids, but have many interests and a very demanding job. I rarely get frustrated playing pool simply because I play pool to escape the parts of my life from which I need to take breaks.
My job, for instance, I'm a mechanical engineer. I design, assemble, install and support large CNC machines. I've created a needed department in my company and now lead that department. I drive a 40 year-old car daily because I want to, but that requires hours of maintenance which I insist on doing myself. I help friends when they need it. I make things for myself and others. I cook most of my meals.
Pool is the one thing that has almost no reward for me other than playing well or learning something. I rarely play with people and stopped playing tourneys for quite a while (though I've won 5 of the 6 I've played recently). I get little joy from beating people, but immense joy from playing with a select few people.
I have taken several vacations from playing. I quit for a few years while I was playing tournament foosball. I've had to travel a lot for work and don't have time to play when I'm out of town, so I've taken two three-month breaks and many 3-6 week breaks.
I can imagine putting up my cues if something else replaces playing. I know this may happen, but I also know that pool will always be a base part of me.
I have no need to try to make money on pool and therefore I refuse to let it be anything but fun.