Not much less than I spend and I'm not missing anything I want to have or do. Mostly a few books and a meal out with a good friend sometimes. I could spend more, I just don't have the need.
I treat myself with cheap milk chocolate and caffeinated beverages. I have the expensive equipment and subscriptions I need, and the more expensive chocolate doesn’t make me happier. The thing I can’t buy is time and skill progression.
Why on earth would you find that depressing?