I ripped all my CDs at one point, realized it was a pain in the ass, deleted all of them, and then redownloaded them from Oink.cd/What.cd.
I stopped buying albums for a while, because I have a Google play music subscription, but a couple albums I really liked were deleted from the service recently. I had "added them to my library", understanding that I didn't own them, but I never expected them to get pulled from the service.
I'm getting pretty sick of Google Play shenanigans altogether. I'm probably going back to ripping my own music because the streaming services suck, and oink/what are shut down.