Science finally lives up to expectations!

I just read about a team of European doctors who recently completed a successful windpipe transplant surgery. The important part is that the donor windpipe "[...] was stripped of its donor’s cells [...]" and coated in the recipient's stem cells. Since the surgery the patient has had to take no immunosuppressant drugs and her body has had no immune-system reaction to the transplant other than the healing of the surgical wounds.

Is it just me or has anyone else been waiting for this since Dolly was cloned? (I would like to note that at the time of Dolly's birth I still lived in Las Vegas and was ten years old.) When I first heard about Dolly I assumed we would be cloning humans and body parts inside of the decade basing this on a vague assumption along the lines of: the process of cloning a sheep has to overlap at least 99% with the process of cloning a person. Aside from eventually being told of the various ethical reasons for the ban on the cloning of humans I do not today know all that much more about the science of procedures like this. I took the obligatory high-school classes, but did not enjoy them much and didn't really learn too much.

Today I simply do not know enough about the science behind this work to comprehend why progress is so slow, and that leads me to frustration over what I perceive to be the relatively slow pace of development. I suppose that in this way my ignorance usually forces me to underestimate and subsequently ignore the value of achievements like this, so I am posting this as part of an effort to slowly educate myself a bit.