The sheer and absolute joy I had at playing Portal 2.
Getting so immersed in the Fallout universe that I keep thinking I should collect bottlecaps and bobbypins when I see them in real life.
Being able to create a character and have them change their worlds. Being able to make a difference in a story.
Being able to have the bad-ass hero of the galaxy/wastelands/fantasy world etc be a woman instead of the default male like in most action movies.
The music. Fallout, Mass Effect, Portal, KOTOR, Silent Hill. Just too many too count.
A game moment bringing me to tears.
Beating Knights of the Old Republic, the first game I really played properly.
Slowly getting better in games as I play them.
Being able to have long talks with my brother as we're both video game nerds.
The end of Portal 2
Saving everyone and/or talking my way out of a situation in games.
The small details you find in Fallout. Little things that show just how much work was put into the project and the setting.
Winning a huge fight by the skin of your teeth.
Just so many things. The stories, the characters, the music, the setting. There's so much to enjoy. So yeah, that is why I play video games.