I'm 66 and I've been riding my carbon Kuota bike for 15 years now with Chorus 10. I rented a brand new Specialized Roubaix when I was in San Fran just before the pandemic hit, and it was a revelation. Fatter tires, wider gears, a shock absorbing stem, disc brakes, through axle hubs, 11sp 105. It all added up to a much more comfortable ride that was still as fast as my current bike and shifted better than my Chorus. The low gear was 34/34 and I didn't have to struggle uphill even in SF.