[njsubedi]

If only browsers had similar behavior across the platform and devices, user-agent wouldn’t be so useful to servers. They wouldn’t need to respond with customized content for each different user agent. As a developer, I’d prefer having to deal with at most a few dozen UAs instead of hundreds of specific ones.

[rrwo]

If you're using a version of a Chrome-based browser or Firefox from the few years, you don't need to worry about the UA.

At $work, once we dropped support for Internet Explorer, site development and maintenance became much easier.