Some people like the style and feel of the classic steel road bike. I have the full carbon road bike with ultegra (though I haven't bothered graduating to electronic shifting or 11-speed) but the bike I liked riding the most was a 1984 Raleigh in Reynolds 531. When that got totalled in a crash I threw some money at a retro/modern compromise - a custom steel frame in columbus spirit tubing with a 2013 groupset and carbon forks.

CF is a terrific material, I have nothing against it. But a traditional steel frame just looks more like a bike should look, to me. Something to do with my age...