The two are not even comparable. Music add to the atmosphere of the movie, it the games its just static music that does not add nothing to the gameplay.
In movies the budget the soundtrack with the movie for this very purpose, in games its just something they put in because.
Ive yet to play a game that needed music for effect. Some games have neat music, but i bet majority disable it after a bit.
You're a headcase.
Music is just as important to games as it is to movies. It establishes the atmosphere and mood of a game. I never turn the music off in games, even when the soundtrack is lackluster.
As for the idea that music adds nothing to the gameplay, I disagree. Take Legend of Zelda. A good Legend of Zelda game has each dungeon feel distinct from each other. The music adds to this distinctiveness. From the creepy vibe of the Forest Temple...
https://www.youtube.com/watch?v=hmsZyC0UXUU
To the grandeur and mysticism of the Spirit Temple.
https://www.youtube.com/watch?v=cEWOeiUmFgA
Music also adds to story-driven and character-focused games. Take Chrono Trigger, for instance. There are individual themes for the characters, which help make the characters feel more distinct and memorable. Who could forget Frog's theme?
https://www.youtube.com/watch?v=9YsAyO9oW00
Or the Magus' theme?
https://www.youtube.com/watch?v=JKRRXt8J5YU
In games with more twitch-based action, the music is key in getting the heart racing and really driving home the point that a fight is important and you need to do your best, like in Mass Effect.
https://www.youtube.com/watch?v=GB5dKamxtI4
Music in a game can also be critical in establishing a epic sense of drama and finality at the end of a game. Take Sovngarde from Skyrim.
https://www.youtube.com/watch?v=VBPwCmU0V-Q
Anyways, my favorite game soundtracks off the top of my head in no particular order are:
Legend of Zelda series
Mass Effect series
Chrono Trigger
Final Fantasy series
The Elder Scrolls V Skyrim
Fire Emblem Awakening
Deus Ex Human Revolution
Each of these games would be lesser if they did not have soundtracks.