I don't think it's off track at all, Italian, it's all part of the issue of merging the realities of adoption, with the dreams and wishes everyone has.
I think you're right about adoption having to free the rules a little - we know of one couple who are adopting who have a bc, and have no desire for a young child, but because of the age of their bc, they are being forced down that route. They appreciate the theory behind the 'rules', but it does seem that it makes older children even harder to place.
I know that DH and I have talked about adopting older children, when we ourselves are older and have already 'completed' our family. I think that is something that should be made more common place (older couples adopting older children once they have raised their 'first' family) - adoption seems to be something that wider society regards as for people with fertility issues, not something which is the responsibility of society as a whole.
I am always wary of being truthful about our preference for a baby, mainly because of the perception that if you want a baby you're not really adopting for the 'right' reasons (again this is an assumption that wider society makes, not those 'in the know'). DH and I want to be parents, that is our motivation first and foremost. It is impossible for us to have birth children, and so our options are either fertility treatment, or adoption. We have decided that fertility treatment isn't right for us, and so have taken the adoption route. The fact that by us adopting a child is given a home and a family is a bonus. We are not doing it out of any sense of moral obligation, or desire to do a good thing, which is what a lot of people (wrongly) think adoption is about. Please don't think that I am in anyway negating the fact that adoption is a good thing, but we are not solely adopting in order to do a good deed if that makes sense?
There are far too many myths and misconceptions about adoption. The number of times I have heard people make throwaway comments about how they'd take any child, and every child deserves a home and a family etc. but then they don't think to make the call. Until that kind of attitude is eradicated, I think the stigma of having a desire for an age, or sex etc will continue.
I have really rambled here, and probably made very little sense. I have also probably used incorrect terms etc. so apologies, I don't mean to offend anyone. It's just nice to be able to get it all out, and know that (the majority of) people on this board understand and empathise, and mostly importantly don't judge. 