The point is boys shy away from nursing due to traditional gender roles. Both are equally qualified provided they are trained.
Because ye olde history people got together and made a conscious decision to make it so.
Eh. Okay, since you asked nicely. It’s not more or less “worthy” per se. It’s then considering the fact that motherhood as a job that does not equate to fatherhood (traditionally speaking). Which, should be equal. It should be just “parenting,” but then, if parenting should be considered a “real job”, then like a “real job”, you have to get paid commensurately. Who’s gonna pay the person who is parenting? All other “real jobs” have holidays off and time off - Should parenting then have the exact same things? But wouldn’t that then be “irresponsible” to leave a child and go on vacation on Christmas day?
Parenting is a duty, not a job. At least considering the current climate, it should be for most. If you want to treat parenting as a “real job” (which is your choice and totally fine), then we need to write some new labor laws and change the views and judgments of people on Earth.