One of my son's teachers had a surrogate baby. She also has two of her "own".
She's a teacher and the school, parents, kids...no one had an issue with it. Her husband was her total partner in the decision.
I'm wondering if your husband is worried less about what others will think than he is about how hard it might be for you, or even him, to actually give up the baby.
Men don't always outwardly show how deeply sensitive they really are and maybe saying he's worried about others is his way of saying that he's not sure.
I could be wrong, but you two have to really talk about the reason you want to be a surrogate. Is it for your sister? Is it for someone close to you? Is it for a stranger thinking that might make it easier?
Your motivations are your own and no one's business but your's, but you and your husband have to be 100% on the same page about it.
I honestly wanted my sister to be a surrogate for me, but she wouldn't do it. She had one kid of her own and hated being pregnant so much that she swore she'd never do it again. And she didn't. She's a great mother, don't get me wrong.....but a pregnancy isn't something to take lightly under any circumstances. My sister would have given me BOTH her kidneys, and maybe even both her corneas, but go through a pregnancy? No way.
There are people who will judge us for anything we do. There's no escaping that. In my opinion, you need to figure out if that is REALLY what is bothering your husband.
You're his wife. He loves you. He is going to go to sleep with you every night and wake up with you and see you have morning sickness and swollen ankles. He'll feel the baby kick and watch your belly grow.
You might be able to cope with the fact that it's not YOUR baby, but your husband might be wondering if HE can be okay with it.
He might be worried that he will love the baby.
Just a thought.
I hope it works out for the best whatever you and your husband decide.