Why is sperm donation morally acceptable way to make money if prostitution isn’t?

Obviously any prostitution involving trafficking is horrible and supporting it in any way is wrong.

But for prostitution not involving trafficking most people still consider it wrong as the buyer of sex is usually taking advantage of the fact that the prostitute needs the money more than the buyer and thus the buyer is coercing someone for sex by having greater financial means.

I think most people would consider having someones child much more sacred than simply having sex with them. And the main reason anyone donates sperm anonymously is simply for money. So why is paying to have someone’s sperm used to create a baby for you considered morally acceptable but prostitution not?