Here's looking at you,kid

A kiss is still a kiss
A sigh is just a sigh
The fundamental things apply
As time goes by

Yes, I saw Casablanca again…for the 15th time I think! And for the 15th time, I was overwhelmed. It is one movie that just gets better with time. The superior wit, a very simple and unpretentious script and Humphrey Bogart’s unique style. Surprisingly, its one story of unrequited love that does not make me sad. Maybe because it’s not just a love story. As Rick puts it to Ilsa, "I'm no good at being noble, but it doesn't take much to see that the problems of three little people don't amount to a hill of beans in this crazy world. Someday you'll understand that."
Maybe it is the ‘beautiful friendship’ between Capt. Renault and Rick.

Capt. Renault: Rick, there are many exit visas sold in this café, but we know that you've never sold one. That is the reason we permit you to remain open.
Rick: Oh? I thought it was because I let you win at roulette.
Capt. Renault: That is another reason.

Or perhaps, its the setting. In the midst of war and brutality, when you think people had forgotten the meaning to humanity, it shows you the sentimentalistic streak in a seemingly dispassionate man.
Whatever it is, it is a wonderful movie. A classic. Too bad they don't make movies like that anymore!