Why is iPhone better than other smartphones? Is it really worth switching?

It's an eternal debate, and the truth is that "better" is a relative concept. iPhone is definitely good, but it's not universally better for everyone. The advantages are real though: the iOS operating system is maximally optimized for the hardware, apps in the App Store go through strict moderation, updates roll out simultaneously for all models for years. Plus Apple's ecosystem works like a clockwork mechanism - if you already have a Mac, iPad, or watch, an iPhone will integrate perfectly. And the security is at a level other companies can only envy.

But switching is only worth it if you're already locked into the ecosystem or if Android specifically bugs you. Android phones these days basically don't lag behind in performance, and they beat iPhones by a factor of two in flexibility and customization. Samsung flagships, Google Pixel, Xiaomi - these are powerful machines, and if your current Android is working fine, there's no point in switching just for the sake of it. All the apps you need are available everywhere. The switch itself will be painful: getting used to iOS, buying paid apps all over again, moving your data around, then breaking away from your usual standards.

If you have a specific reason (your phone broke, you need a better camera, you want an iPad) - then yeah, take a look at iPhones. If everything's working fine - stick with what you're comfortable with.