If someone near me said come ride all of my steel and titanium bikes, I'd certainly be there. It's almost impossible to ride a lot of this stuff otherwise.
Then again, who wants a 6' tall, 275lb guy with legs like tree stumps on their expensive bike?
That said, a guy recently let me ride his titanium bike on a group ride. I jumped at the chance. Granted it was a 12 year old Ti bike with a cracked and repaired frame, but Ti nonetheless. I couldn't get off of it fast enough. I made it about 12 minutes I think. And he was in no hurry to give my bike back either, hehe. He said the smoothness of my bike was something he could get used to.
Granted his bike was a size too small for me so I didn't do a lot of standing, but I didn't notice any flexing either. Just a harsh ride. Sometime later in the ride, the weld from his frame repair cracked again. He said his next purchase was carbon.
I'm not saying I know anything about modern Ti based on this ride, just that I don't care for old Ti bikes. I would like to try a modern, light steel bike just to see what it rides like and if it can stay strong when I stand and climb.