Why not play a DRM-free audio file (Opus, while having lossless FLAC backed up) instead of an obsolete CD? I don't use renting services for music, but I don't

Why not play a DRM-free audio file (Opus, while having lossless FLAC backed up) instead of an obsolete CD? I don't use renting services for music, but I don't buy CDs either (unless it's the only way to buy it). I buy audio files. The benefit of CDs though is also getting the lossless version, when digital one sold is lossy only. Other than that - I don't see the point.