The benefits for using titanium in eyeglasses frames now seems obvious. Titanium will result in frames that are equally as strong as stainless steel frames yet are only half the weight.
Titanium makes a lot of sense. Don't let any retailer tell you it will change the world, but it will provide a lighter pair of glasses equally as strong as a steel pair. Also, the other side of this is that if you know you'll only be wearing a pair of glasses an hour or two at a time (e.g., sunglasses or fashion glasses), you'd better save your money to buy cheap glasses making of stainless steel frames.