eReaders are great for travelling or when you read a lot. I bet you know the issue, some books are nice to have in a shelf and worth presenting, others might not. Moreover, ebooks save you a lot of money as they cost half of the price, most classic books even often come for 1-2€ quit. The same goes for audiobooks, many of them are a lot cheaper than hardcover books & pocket books. Yet, having a nice leather-bound copy of a classic in your personal library simply looks good on occasion.
On top of that, audiobooks and podcast often are the way to go while commuting or walking around. They're a simple way to fill daily time with something productive and distract oneself from the mundane daily tasks.