I think it's very brave. Personally I didn't like my pregnancies, I did love the outcome. Seems very hard to only do the tough stuff and then give up the only good that comes from it. But again, some people have an easy going pregnancy.
On the surrogacy topic, I very recently watched Top of the Lake, China Girl. So I don't have a twisted opinion at the moment...

Just one tip, don't watch it.
On the other hand, if I'd be in a position where I'd have trouble getting babies, I might be very happy with a surrogate, maybe. No idea. Not for me to judge anyway.