I’ve had a litespeed mtn bike for ten years and dont think I will ever sell it. I had to make the tough choice between my full suspended GT and kept the hardtail.
The best part of titanium is that it rides like a steel frame but weighs significantly less. If you are looking for a solid bike that will last for years and don’t like the high prices of carbon fiber, this can be a good compromise.
Here’s a classic article that explains where titanium fits into the spectrum of what bikes are made of.
My summary is that titanium should be the crown jewel of frame materials – expensive, tricky to work well, priced over its inherent value, but ultimately rewarding in an almost intangible and sublime way. Personally, I’m using my current bikes as design tests of the titanium versions I’ll eventually have custom made.