Most common switch due to VS Code being completely free while WebStorm requires subscription. Gain: fast startup, lightweight, massive extension ecosystem (40,000+ extensions). Trade-off: requires manual setup for equivalent code intelligence, refactoring less reliable.

Full-stack developers switch for broader language support. Gain: JavaScript plus Java, Kotlin, Python support in one IDE, same familiar interface. Trade-off: more expensive ($149-499/year), heavier resource usage, overkill for frontend-only work.

Developers frustrated with WebStorm's slowness switch for speed. Gain: lightning fast startup, minimal resource usage, one-time $99 purchase. Trade-off: no built-in debugging, requires plugins for most IDE features, less intelligent code completion.

Power users switch for ultimate speed and customization. Gain: instant startup, runs in terminal, fully customizable, free. Trade-off: steep learning curve, requires significant configuration for JS/TS development, no visual debugging.

Developers prioritizing AI assistance switch for better AI integration. Gain: superior AI code completion and chat, VS Code base with familiar UI. Trade-off: still requires subscription, AI-dependent workflow may not suit all developers.