Your situation is one I wouldn't wish on anyone and your decisions about surrogacy are yours and your suggogates. So long as they know the risks and make an informed decision, that's what matters.
The problem here is there aren't just two parties is there?
NO ONE is centring the person that really matters here in terms of risk. The actual child thats born at the end of this 'informed decision'.
And since we haven't got research into the long term effects on children from being a surrogate - because we haven't got to a place in time where thats possible, how can you make an INFORMED decision?
You can't.
The best we have in terms of this, is knowledge about how not knowing your genetic origins and how that impacts on people. And we know that this is a really mixed bag - and that even those who have happy adoptions have major issues about their identity in the long term. Add into this the deliberate act of mixing a genetic identity with a gestational mother to erase that tie and you have a conscious act to break that human link that seems to be strangely universal across cultures - people have a desire to see the people who look most like them.
Every time there are these discussions the would be purchases ALWAYS make it about them and their needs and their biological need to be a mother / father or to have some sort of 'created for baby' free from the 'potential defects' of being adopted. Women who give away their unwanted babies are somehow lesser and not high quality enough carriers - their lifestyle choices and background are deficient to those who can't have a biological link or aren't made to measure enough for those who want that biological link.
Wtf does that actually say about this supposed 'innate' desire to be a parent. Oh I want a baby, but no not like that. Not a traumatised one. Not one thats a bit older. Not one that I can't pick the look to be as much like me as possible.
Na. Its not about the baby. It never is. There is this void of willingness to talk about this, and instead there are all manner of nasty accusations thrown at those who do ask them. "Oh you are homophobic" "Oh but you don't understand the trauma I've been through because you have children". The emotional blackmail is appalling.
But the women and babies who are paid and bought by this are forgotten in the vanity of it.
I'm not remotely sorry for being blunt about how awful I find the whole practice.