I think I could only ever be a surrogate for my sister or best friend, probably never for just anyway...but again, I've never had to think about it! If someone close to me asked, I would definitely put a lot of thought into it, it wouldn't be a definite no, but it would be hard. I think I would end up getting attached...but if it were a niece/nephew who I could see I think that would be really rewarding.