Mister Fandango wrote:
As I pointed out later in the thread, both the Doctor and the Ponds were both looking for a way out of the relationship they had, and they both knew that there was little they could do to make that happen.
This solved that problem for all three of them. The moment the Doctor realized that the Ponds lived a long and happy life together, that was that. The dangers inherent to trying to "rescue" them far and away exceeded the actual desire to do so.
I'm not sure that I buy that they were all looking for a way out. But, for the sake of argument, let's say they were. All that means then is that there's no need to rescue them until there's an overriding reason, say the 50th Anniversary!
Also, if they were all looking for a way out, I'm sure there'd be something better than dumping them in the past, separated from friends and family.