Why I Replaced All My useState with useReducer in My Real-World Project

Today I made a decision that changed the structure of my entire project. In my world-wise app, I replaced almost all useState logic with useReducer . Not because useState is bad. But because my app is no longer small. When your project grows, scattered state becomes messy. Multiple states. Multiple updates. Multiple dependencies. Harder debugging. And I realized something important: For real-world frontend applications, useReducer + Custom Hooks + API integration is a powerful combination. The Problem I Was Facing As my project expanded, I had: Many related pieces of state Complex state transitions Async API calls Conditional UI updates Managing everything with useState started to feel fragmented. Each component had its own small logic. But the overall flow became harder to control. That’s when I decided to refactor. Why useReducer Made Sense useReducer gave me: Centralized state logic Clear action-based updates Predictable state transitions Cleaner debugging Better scalability Instead