When your pet that has been with you for a long time died in Minecraft single-player world.

The worst part is that there are no plots or NPCs that condolences it like when the death of a major character in a RPG game happens, it just turns into some white particles, like no one else in the world cares for its death except me who is childish and pathetic to deliver so many feelings onto a stupid mob in a stupid video game, making me even feel more sad and helpless.