My issue with replacing something like reddit is... what exactly to replace it with?
Reddit is entertaining and free. Every time I quit, I end up still seeking out entertainment, but it's no longer free. Movies, gambling, restaurants, bars. TV is free but even less entertaining, imo. Books feel like mental masturbation and very few change my worldviews at this point.
My overall conclusion has been that reddit is not that bad of a habit, comparatively.