When I first saw the title of the thread I thought that someone finally feels the same way I do, but it turned out the OP is sad for different reasons. Ever since I saw Aliens, when it ends it brings a feeling of great sadness because , first of all, you see how many have died and that almost nobody comes back from the assigned military team, and the eerie, dark music played during the credits reinforced the feeling for me. Its a feeling of loss, feeling that something terrible has happened and most didnt make it. Thats why I get the sad feeling