You're not necessarily missing out on sound quality. Much of the content available from streaming is CD quality. What you're missing is convenience and selection. It doesn't have to be either/or, however I have hundreds of CDs including some nice SACDs and they rarely get played anymore. I'm streaming music every day.
CD or Streaming... am I missing out?
I listen to CD in my headphone office system. Use a Theta Compli transport and a very nice and pricey tube 16/44 DAC. Have thought about a streaming capability and all its benefits but am both limited by SPDF and by 16/44 only. I also love the analog sound of my tube DAC. Does streaming sound far surpass CD? Am I missing out?