Woman in shock after she finds out her husband is sperm donor to 47 kids.

A woman has been left in shock after finding out that her husband is the sperm donor of 47 kids. In a Reddit post, she says that he told her he donated sperm early on in their relationship, but she didn't want to know about it. However, eight years and one daughter later, she was curious to see how many and was shocked to find that the last count came to 47. Now she wants to divorce him.She said:
Married for 8 years, have one child (3F) together When we started dating he was very clear that he had donated sperm in the past. I never asked him how much but just assumed it was just a couple of kids .Actually, ask him last week and he tells me the fertility centres last updated him at 47 kids 
"I was... Not expecting that many.
"It's clearly my fault for not asking how many. At the time, I literally said I 'didn't care' about his sperm donation and 'didn't want to know', so I can't blame him for not telling me how many. I literally told him not to.
"....But 47?! Christ!!!!
"I can't stop thinking about all the problems this will cause when we're older.
"WIBTA for divorcing him for something that he was very upfront about?!?!"
Many people replied to the thread, saying that since her husband was upfront about it, it would be questionable to divorce him over it.
One said:
"They can contact him at 18. He could have like half of them want him in their life easily. That's a lot. I don't know what that would mean for them but it'd definitely be a lot. Edit: still ridiculous to divorce over it but I can see the thought be daunting at the start."
While another said:
"YTA you don’t need us to tell you this. You knew in advance, specifically asked not to know how many and have been married for years. What’s the real reason you want a divorce."