The more complex input elements can't always be styled, don't always have events available for things you'd expect etc. A bare input allows you to do those thin

The more complex input elements can't always be styled, don't always have events available for things you'd expect etc. A bare input allows you to do those things from scratch, whereas a custom one is useless if you can't build on top of it. It's the curse of complex UI elements on the web. Menu failed for similar reasons.