I do the same. It's much easier to travel with a kindle than any book.
I've been told repetively by friends that I should do it... and yeah, guess I should!
Would cost less too when you start delving into new series, been burned a few times by works that I didn't like or were outright bad. These are just using shelf space.
That's the thing though, as one gets older, tastes evolve. I still read Salvatore's Drizzt series, but not avidly as I used too as a teenager. Now they are just light stuff to pass time.