I have a Ritchey Swiss Cross Disc as a road bike, and I was looking into whether I was missing out on weight/speed compared to a carbon bike. Not for competitive reasons, but I was curious!
I borrowed my colleagues high spec Canyon Ultimate CF race bike which has carbon integrated everything and weighs mid-7kg’s. For me it felt livelier/faster but actually wasn’t on country roads near me, it didn’t hold speed as well especially over broken road surfaces and felt a lot more nervous. The Eureka moment though was when I took his Mavic Cosmic carbon wheels off and fitted them to my Ritchey! Absolutely transformed it and I went straight out and bought a set second hand, it was the best of both worlds for me. I had my comfortable stable bike, but with a noticeable amount of extra kick and response on the climbs/sprints and a couple of mph of ‘free’ speed on the flats.
TLDR; If you like your current bike, treat it and yourself to some nice wheels.