I've posted a few times about the benefits of music streaming services, the link above though is the other side of the argument.

When you own music it's yours. You can do with it what you want. It's yours to enjoy forever.

With streaming all it takes is a dispute with a record label or an artist to change their mind and the music is gone. Like so much in the 21st century it's a matter of convenience. I love having access to millions of songs anytime I want them. However, losing that access to the music I love the most scares the hell out of me. For now I'll enjoy streaming with the complicit understanding that it's nothing more than a temporary rental, and make sure to buy anything that moves me in that way only music can.