1. Ti looks bad ass, and is the least common bike frame material.
2. Lowest maintenance because it is extremely corrosion resistant. Ti > Carbon > Alum > Steel in this regard
3. More resilient to normal wear and tear (scratches/nicks) than carbon.
4. More dent resistant than super high-end steel frames of similar weight. Much more dent resistant than high-end alum frames.
5. Less harsh than most modern oversize tubing alum frames. Ride feel is very similar to steel.