CD player reliability.... good and bad.

Since the mid late 80’s I have gone through probably 15 + CD players, some lasted me many many years, some were non working out of box, some lasted a week, some months, and as said some lasted years.
Is the shipping process causing some jolting of the unit, and innards get jolted and the tray or a small piece gets damaged? Or just the way they are made?

We take great care of our CD players, dust cover when not in use, don’t drop them, hit them, shake them.....yet they just stop working or things go bad, skipping, display goes out prematurely, tray rubs on something, or any number of issues...!! ??

BUT, cheap pickup truck CD player still works after 13+ years , dust, bumps, filth, exploding pops, lots of dust in my truck from my profession, dash, floor, everywhere, years of dust, caked all over, yet I put in a cd, and the darn thing still works.

But , recently it has started to act up, it plays everything I put in it, but sometimes won’t eject,...

anyway, why is it most CD players have a reliability problem. NOT all of them, but there seems to be a %10-15 of new players that arrive in non-working, or only last a short time.

Any thoughts......
I've owned several CD players...still have 3. 

A 20+ year old NAD that works the same as it did new.

A 20 + year old Proceed CDP that works as well as it did new.

 A 10 + year old Marantz SC 15si that is my current go to unit.
Only problem CD player I've had in the last 20 years was a Sony SCD 1 which had a failed SACD laser after 18 years of use.

I don't know what CD players you had or how you treated them, but my experience is that decent quality units work well for a long time.

Got a rega Apollo that’s 20 yrs old. It’s perfect. Love it. Had denon, Sony es, carver. All of them broke. Rega’s are solid. 

Yes correct, leaving the player turned on with a disc inside, also turns on the laser, and will take the same amount hours of read life off the laser life as it does playing the disk.
So those who "think" that to leave it turned on 24/7 because they "think" it sounds better, just make sure you haven’t left a disc inside.

Cheers George