I already own hundreds of CDs, some are ripped some are not. I still buy them occasionally when the music isn't available in any other format (and this is still true if your tastes don't run to the mainstream). Also, used CDs are (1) still generally cheaper than digital downloads, and (2) can be ripped to whatever level of compression or uncompressed format that suits your needs.
If you don't rent or buy DVDs anymore it probably means you (1) have mainstream tastes, and (2) don't care if something you really liked can be watched a second or third time. The first is true because very few classic films are available for streaming. It's okay that you presumably don't care about classic films, but it isn't okay to denigrate others who do care. The second is true because streaming availability changes all the time depending on the whims of the rights holders. A series you liked will probably simply vanish one day without notice. I see complaints about this on Netflix all the time. The streaming may be gone but the discs will still be available. So it depends on whether this matters to you.
No opinion about Blu-ray, but it does appear to be the only method of delivering full HD. So I guess it depends on whether that matters to you.
For the old music that you like but cannot find its digital version on the market, you most likely have already own a CD, you should have long ago ripped it into MP3 version.
For the classic movies that the streaming service no longer keep and you happen to like a lot, most of them you can BUY their digital copies somewhere, or, maybe you've already have a DVD of it, just rip it into digital format. The DVD players will soon be as scarce as the VCRs.
Before Blueray discs get cheap enough to compete with digital format, the whole digital market would have long gone to even better quality than Blueray can handle.
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Hahaha...sure I am. That's why the entry level (traditional) MacBook Pro 13" is their best selling unit in the US too.
Now I see what is going on, it's not you are wrong or right, you are simply living in the stone age. MacBook Air has been the best selling Mac since 2010.