Some things aren't within our power to change, but this is. This absolutely is.
If you want to work in the future - it sounds like you do - the only way that will happen is if you do something to explore how to make it happen.
None of us had experience when we started out - but you have to start somewhere. If you never start any kind of work then you'll continue to never have experience.
Not all jobs require qualifications, plenty that do can be done while you work or as part of the job's training.
Besides which, surely childcare costs would be a family cost, not something borne entirely by you. So saying you'd barely make a "profit" makes no sense even before you factor in all the other reasons for working. And anyway, the more experience and skills you build by being in the workplace, the more your earning potential increases.
Plus pension as has been pointed out. Working gives people fulfilment, opportunities for social interaction, a way to build something of their own for themselves, a means to broaden their experiences and horizons, a sense of accomplishment.
Unless you have circumstances to indicate otherwise, you're likely to live for a very long time from now. With a whole life to lead once the children become adults.
Going through the gaining workplace experience thing is an investment in your future, and opens doors and possibilities for that future. You don't have to dive headlong into high level qualifications and or a career, especially not right now, but there's no good reason not to begin smaller steps along that path. If you want things to be different.