For those that can afford it, I think it’s absolutely worthwhile to get original music for their game.
A paid a composer to come up with some unique music for my game Scrapship (still in development). Besides the huge dopamine rush from hearing the original music, the other benefit was that it helped limit my scope. I was only able to afford 5 tracks, so that meant that unless I want to be repetitive, the game can only have a max of 5 levels.