I think that most of them live on autopilot and are so hard wired to survive that they don't question anything at all. For most people, even if life gets harder (which it is right now due to inflation and an increased cost of living), they would still try and survive as death is uncomfortable for them. They'll just see life getting harder as an indication that they should get tougher and be more resilient to cope with the demands of life instead of deciding to quit the game entirely. It's only when the suffering becomes too much when they start to be suicidal but that doesn't happen in most cases because these people are really determined to deal with life as it is.
In addition to that, they also enjoy a bunch of little things that all add up together. Playing games, watching youtube, watching movies, listening to music, spending quality time with family (and/or friends), seeing the sunset etc. Just literally a bunch of little things that they rarely get to experience because most of their life is spent slaving away but they experience these things just enough to where they are satisfied by it.