I was going to say exactly this. After two cross-city moves and one cross-country move, my wife and I converted our sizable (~100-150) book collection completely over to e-books before moving overseas. The most annoying thing about physical books is that they are so dense. Movers (especially long-distance movers) will charge on both weight and space, so even though it may not seem like you have a lot of stuff, the added cost of moving a couple dozen books can quickly eclipse the expense of replacing them electronically.
I'm a fan of Living Light. I don't see why people hang on to old books, unless they are useful for reference (which is becoming more and more rare with the internet as a resource) Books do so much more good being read than collecting dust on a bookshelf. I give all of mine away.