There are a number of APIs, such as geolocation, that only work over https. It's also very common to accidentally generate non-https urls for assets, which is

There are a number of APIs, such as geolocation, that only work over https. It's also very common to accidentally generate non-https urls for assets, which is a bug most people would rather catch in local dev and not production when the browser refuses to fetch them. I use traefik to serve my apps in dev, which generates self-signed certs by default if you don't hook it up to ACME. Slightly more cumbersome because it means clicking through a warning screen and disabling verification in CLI tools (actually those are where I do drop to plain http). I'm sure this lcl.host product smooths this process considerably, but when it comes to local dev tools, I have an absolute requirement that they actually run locally and don't tether me to some cloud service, so I'll be sticking with traefik regardless for now.