For this I've chosen a photo that makes me sad. And it's a montage from a Doctor Who episode. Relevant dialogue quoted below.
The Doctor: Here you are, living a life day after day. The one adventure I can never have.
Rose: Am I ever going to see you again?
The Doctor: You can’t.
Rose: What are you going to do?
The Doctor: I’ve got the TARDIS. Same old life. Last of the Time Lords.
Rose: On your own? I… I love you.
The Doctor: Quite right too. And I suppose… if it’s my last chance to say it… Rose Tyler… [disappears]
I cried when watching this.