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That was one of my first guesses, but according to her, it's not it (even though the part of being tired of life is there). Thank you anyway, jormis29, I appreciate it.
you might want to have a look at the Who Wants to Live Forever? examples
Working on cleaning up List Of Shows That Need Summary
Could it be No Such Thing? It's not an old man, but rather an immortal monster, but I do remember a few rants about being condemned to be immortal.
My sister remebers seeing this movie a couple of years ago. Her memory is vague, but she is completely sure it's live action and she was sad for a while.
She only remebers the ending (take it with a grain of salt). The old man says that as he's immortal having friends is useless and he has assisted to many funerals, so he'll rather be alone or is condemned to be alone (or something along those lines). She remembers him saying it as he stares through a window / the window is close and the camera "spins".
Something was up with his immortality, but doesn't know if she's filling the gaps or if it actually happened in the movie.
Thank you.