A few other countries have institutions for raising children? But the basic bar on those is the kid having a nice enough life, and not being exploited too much for profit or forced to become police or whatever, that the Summoned Hero probably won't execute your government about it.
Nobody knows where they go in the next life, but people don't usually believe it's miserable, or they wouldn't have kids themselves. So if you're going to store kids in horrible dirty barracks and let them go mostly hungry, they're probably mostly better off finding themselves somewhere else? So nobody builds an orphanage unless it's a nice orphanage and that can actually get pretty expensive.