Why are there no tube televisions anymore?

@rixthetrick : I watch a lot of over-the-air broadcasts on the 19". Certainly limited selection compared to cable. The ABC and FOX news shows done with HD cameras look quite impressive for a cheap TV! OTA broadcasts of movies made with better cameras also look great! Ditto for sports! The limiting factor is the camera technology - OTA broadcasts are not compressed, unlike much on cable. I also have a Sharp 55" in the living room and a new Insignia 40" in an unopened box (lack of space!). 

I got rid of the VCR and tapes long ago! I have a nice collection of movies on DVD. When I saw the first DVD players back around 2002 I knew that was the future! And they played CDs too!

Tube TVs like tube amps, 35mm film, and vinyl are objectively inferior to modern replacements. However, all of them provided excellent quality and remain perfectly enjoyable today. My mother still has a Panasonic 20" TV I bought back in the 1990s and it is still in regular use. The colors don't seem to have faded even though she often leaves it on through the night as she falls asleep. When viewed at a typical distance it still looks great. My previous TV was a 34" widescreen tube with 1080 resolution. It had a great picture for watching movies. It was a little warpy around the edges which was noticeable on news banners and video games. That TV had a digital image processor so it was a hybrid of sorts. The gamers like the pure analog sets because the lag time is practically non existent, although frame rate ultimately sets the gaming lag and with modern 120Hz displays and gaming systems the lag is down below 10 milliseconds, which is from a human perspective pretty much non existent. 

Well, it's just a matter of time, as technology progresses.
For example Alienware 27 Gaming Monitor (AW2721D)
a 27' 2560x1440 IPS gaming monitor with... oh yeah, this is impressive
240Hz.

Remember the Quasar, "works in a drawer" TV's?  They had a literal slide out cabinet with the circuit boards in a row like files.  I recall reliability was poor due to the bad connectors at the base of the boards.  So ironically, easy to work on which was good since they needed servicing often.  The good old days- AM tube radios, car tires that lasted 5000 miles, oil changes every 1500-3000 miles, carburetors (good luck starting on cold mornings) but also we had soda fountains, juke boxes and roller skating rinks.  Real movie theaters...