Titanium is a material I know least about but h I do have some experience with it. My comments could be off but I guess I can just put in my two cents as a representation of one builder's experience and by no means an expert opinion.
Unlike aluminum, titanium has a lot of more flex than steel. In my experience low-end titanium bikes are so flexy they feel like a wet noodle. The power transfer isn’t great so for overall responsiveness it’s a little lacking. This is what makes it great for mountain biking where you have a super light bike but all the flex is originating from the suspension (shocks). I would say it's even too flexy for touring. When your bike is loaded with gear that extra weight will increase how much the bike flexes and with long miles ahead of you, getting the balance of power transfer, stiffness and a comfortable ride is a must. I would say titanium is best utilized for MTB where the weight savings will help increase its nimbleness and climbing.
High-end Ti is something different. High end means tubes are catered to the rider and wall thickness is manipulated to get stiffer qualities at the key joints where power transfer is key. Most importantly the chain stays, BB and down tube head tube. The line from the head tube down through the BB and into the chain stays is the power band. More high-end Ti bike makers can achieve this with a positive outcome. One, it's very specialized and only the top companies using Ti can achieve these characteristics and two, it adds to the over all cost of the bike.
I love steel. I love riding steel and I love making bikes out of steel. Steel allows me to make bicycles by hand paying attention to riders' needs. It allows me to be thoughtful and it allows me the ultimate freedom to build a bike that will last forever.
Why are we on the bike: everyone has their own reasons but for me it is because I love to ride. I’m not a racer but I’m sure competitive riders feel the same way. I love to ride for a few reasons. One, I have a high quality bike that fits me. It does what I want when I want. It’s freedom, it gets me outdoors. It’s a great source of exercise.