It made me feel quite sad. Especially after battling Gethsis and hearing what he said about N just... I mean, I love N (and N/White) so it was... sad. His room was so small, and there he's been, all alone.
On the other hand I think it was a bit confusing that after Gethsis was beaten he was just all "oh well, yeah I've been locked in a castle all my life and never really grew up and have been mentally abused since I was a kid but now it's all good and I'll just hop on my kick-ass Zekrom and fly away wheeee". He doesn't seem very shocked to hear that he's been only used his whole life and isn't traumatized at all...?
On the other hand I think it was a bit confusing that after Gethsis was beaten he was just all "oh well, yeah I've been locked in a castle all my life and never really grew up and have been mentally abused since I was a kid but now it's all good and I'll just hop on my kick-ass Zekrom and fly away wheeee". He doesn't seem very shocked to hear that he's been only used his whole life and isn't traumatized at all...?