My boyfriend “donated” sperm.

Now that we’re serious I’m concerned about this and the ethics of sperm donation in general. I don’t like that sperm banks separate families across the globe and I don’t support the commodification of children. I don’t like that they disparage half-siblings, simply because they share one biological parent so it shouldn’t matter if they’re separated according to the logic of some people. It’s a very lucrative business that’s protected by the people that are desperate to have their “own” children. Since blood relations are so important to them, don’t they think that their children will wonder who their biological parent is some day? Sperm banks are also leaving millions of children that are already born into this world unadopted and homeless. Though, it saddens me to think of those struggling to have their own children, I would also like to have my own children and I’m worried that they wouldn’t be comfortable knowing that they have siblings in the world that they’ll never meet, especially if they could have a lot in the world as well.
Sure, he’s giving children to families that want them, but sperm “donation” isn’t completely altruistic so it’s difficult to understand why somebody would want to have children from a complete stranger without ever really knowing what their intentions of selling sperm were. What if the children that they have via sperm/egg donation aren’t anything like their biological parent and how they’ve described themselves in their profile. Will they resent their children? I’ll support the process of sperm and egg donation as long as it is altruistic and the families are receiving their donations from people they know. That way children will grow up to know who all of their siblings are without feeling like they’re missing a part of themselves if they’re never able to meet or know their biological parent or half-siblings. Selling your sperm/eggs to families that want children can be great for some families and damaging to others. This topic is never quite exhaustive because everybody is going to have their own opinions on this matter. However, I think in many cases, sperm/egg donations can do more harm than good.