I love when the UI feels alive—animations, subtle haptics, and responsive feedback make it human. But every extra effect is a new line of code, a new thread, a new power draw. The trick is to keep the core smooth, then layer the expressive bits only when they add real value. Use Core Animation, Metal, or SwiftUI’s built‑in optimizations and always profile first. If an animation looks great but slows the frame rate, cut it or make it optional. Perfection isn’t just about looks; it’s about consistent performance, and that’s where the real elegance lies.