Because some of us are looking for an additional NEW CD player (a streaming will not happen in my lifetime where I am at, the old CD players have been rebuilt several times, the parts are getting hard to find, people that can work on them are getting hard to find, etc) and a new one is, well, new.
In my case I will also be looking for a NEW CD player & a NEW (never had one before) SACD player (yes, 2 separate items).
Also, maybe an older one or 2.
Not everyone only has only one home to have gear in (I do the downstairs stereo & the upstairs stereo at my mother's home, and I always have 2 to 3 systems at my own homes (one more or less in the City, one on a river [where cell phones & therefore streaming] have no signal.
The City home is not owned by me but is owned by my family. It is not a place that I like to be (which could be any City). But these days I have to spend a lot of time there, as it is within 12 miles of my mother's home (she is a very active 90, swims, and does other fitness things 3 or 4 times a week). But, I am an only child & was overseas for 17 years (and have a wife, a son & a home [with a stereo], there).
And, finding the better CD players is through knowing which ones are, in FACT, better (old or new).
Knowing the good old ones, maybe you luck up & find one at a thrift store, estate sale and by knowing the way it tested, you may get a very good one inexpensively.
Or maybe not.
Some people know what they have & it will be priced accordingly. In which case a new one is certainly a possible choice, if you need one to last 30 years or so.