anytime i have some money to spare, my thoughts about spending on new and it coming to an end, i already spent a lot in many games, most of them i stopped completly, i like to keep the thought: it was fun and worth it when i was playing, so i'm not regretting that.
but if you have a real life goal and need to save money, i'd advise you to, it's just about managing what you have and actually only using money that you won't need in the game