It's simply so now-widows can have another child (or two) with their late husband.
It's motivation for the soldiers -- even if you don't make it, you can still have another child after your death, and in that way you'll live on.
Looks like you're right.
Partially, yes. I know a scientist in one of Denver's clinics specializing in reproductive health.
They do not allow more than 25 descendants per man per country, and do not allow more than 100 globally. Yes, they do export the material to many countries, including developed ones, such as the UK.
The law about inheriting frozen material from a deceased partner is also widely outdated in many jurisdictions around the globe. In many countries even the legal wife cannot inherit it without active consent, which cannot be given posthumously for obvious reasons.
Is this a war crime? Yes. Is the rest of world letting it happen or actively abetting? It is!
It's about more than simply having anyone's children...