Updated for 2026: the argument in this post has held up for years; the examples needed to catch up. Refreshed with today's library landscape and one new reason that didn't exist when it was written.
So you want to start a project... The first temptation is picking a UI library. Something built out, tested, full of functionality, great-looking. So why do we still encourage teams to build their own components? Three reasons — plus a 2026-specific fourth.
1. You learn your own codebase. Building your own components teaches you to separate code into small reusable blocks, design prop APIs deliberately, and understand what the libraries are doing under the hood — which makes you better at using them when you do.
2. Dependency hell — things break. A great UI toolkit can still be abandoned. Then a security advisory lands, or a React Native upgrade breaks it, and you are rebuilding whole sections on someone else's schedule. Owning your core components keeps that schedule yours.
3. Styling your own beats overriding theirs. If you are going to fight a kit's defaults everywhere — or your team might rebrand — building from scratch is less work than an override war. Your design system, your rules.
4. (New for 2026) The New Architecture divide. Old-architecture support ended with React Native 0.82, and the clearest place teams feel it is abandoned UI libraries that never made the jump. Every component you own is one less dependency that can pin your app to an unsupported architecture. Check anything you adopt against React Native Directory's compatibility data first.
The 2026 library landscape
When you do reach for tooling, reach for the styling-and-primitives layer rather than a monolithic kit:
- NativeWind — Tailwind ergonomics for React Native; pairs beautifully with owning your components.
- Tamagui — styled primitives with a compiler; strong if web + native share a design system.
- gluestack-ui — headless, copy-in components you own from day one.
- react-native-paper — still the pragmatic pick when you genuinely want Material and speed over identity.
When libraries win anyway
Quick mockups, internal tools, short-lived projects: use a kit and ship. The build-your-own argument is about products you will still be maintaining in three years.
Thanks for the read.