To me The Doctor is too weird and alien to mope when he can't see his friends again. In fact, if he were the type of person to miss people then he's living the precise wrong lifestyle really as he's never going to have any constant presences in his life apart from the TARDIS. It's also just messed up that he's cool when Adric dies yet becomes a hermit when Amy and Rory merely get separated from him in time. It's just naff soap opera drama to appeal to a wider audience of casuals who would otherwise have no time for sci-fi or fantasy. Thankfully this type of stuff has been toned WAY down since 2010 but there's still enough to bother me. My favourite Doctor is McCoy precisely because he'd never do something like this. The Doctor shouldn't have human emotional vulnerabilities and should have the perspective of a Time Lord.