Thinking of adoption...?

I am a 29 year old women whose happily married but the fact that we can not have children is starting to become an issue for me because all my sisters (6 of them) have their babies now, and everyone always goes on how they thought I would be the one to have kids. We have discussed a surrogate mother and other ways we could have our own child but the idea of bonding to a child and then to have the mother change her mind frightens me too much. So we began thinking about adoption, we have a lovely home in Oxford, uk and my husband has a great career, I work from home as an artist so would always be there. I'm just not sure about it and what adopting a child would involve???? What if I couldn't bond with them??? Or if someone says " aww, she's got your eyes" how would I react, then I started thinking about an international adoption... I just really need some advice on what it expect from it all and if its right for us????