Just my two penneth for what it's worth....
I'm 70 and my "best bike" ride is a Wiler Cento Uno SR. My winter bike/turbo ride is a Wilier Mortirolo. I'm comfortable on both bikes and love riding them.
However, I've got more and more pissed off being shaken to death on the crappy UK roads around here (Surrey/Hampshire) and have just bought myself a Roubaix Comp (2018 model). With all the icy weather today was my first proper outing.... what a revelation, so comfortable, so smooth. I've got it configured with the standard factory setting with the medium weight spring upfront... that seems right for me as I'm around 68kg. The stack height is at its heighest and I will probably reduce it but today i found myself riding on the drops for a fair bit of the ride and it was very comfortable. Lots of pbs today and a decent average speed (for me).... can't tell everything with one ride but so far very impressed.