How so? Surgeons do it all the time. You've heard of skin grafts, right? You can remove patches of skin and replace them with other patches of skin from the same person and it'll work fine, aside from scarring at the sutures of course. A common problem is not having enough skin to work with of course (it's not like people have lots of spare skin), but if someone got severe burns for instance and we could grow cloned skin for them to implant, that's far preferable to current techniques.
Of course, replacing anything has issues with 1) the trauma of surgery itself, and 2) scarring where things are cut and spliced, but this is better than not replacing things at all and just dying or getting an amputation or whatever. Of course, if you could just get an injection that programs your body to fix these things itself, that's better, but my whole point is that it seems to me that growing cloned organs is closer to our current technological capability.
Of course, replacing anything has issues with 1) the trauma of surgery itself, and 2) scarring where things are cut and spliced, but this is better than not replacing things at all and just dying or getting an amputation or whatever. Of course, if you could just get an injection that programs your body to fix these things itself, that's better, but my whole point is that it seems to me that growing cloned organs is closer to our current technological capability.