Some bikes fall a little flat. How it feels out of the saddle wins me over. If I cant wait for the next rise, and fly over longer and longer hills, I love it. So far, the only bikes that have given me that feeling have been steel, even though other materials felt more, something, on a test ride.
My fondest bike memory was a Peugeot from the mid 1970s, but I outgrew it. Every bike since has been an attempt to recapture that feel.