I'm likely infertile, and no thanks. I'm having enough trouble existing and being employed with long covid on top of pre-existing medical issues for which i have long run out of medical options, certainly all that are available under Medicare. Maybe I would sort of want children if I weren't struggling to just eat, work and sleep? Or maybe the bleak future of humanity would still be enough to convince me not to condemn another person to it.
Falling birth rates might be a little more than just an IVF cost issue. Perhaps we should look into that instead of slapping on a subsidy bandaid and hoping it cures the symptoms.