I don't care for a keynote. I want modern hardware with OS X on my desktop. If they release that online only, I am happy, too. What's the advantage of a keynote

I don't care for a keynote. I want modern hardware with OS X on my desktop. If they release that online only, I am happy, too. What's the advantage of a keynote taking 1,5 hours, showcasing apps I'll never use and demoing projects that don't interest me?