My parents only got a colour telly in the last 5 or 6 years and until then we grew up with a black and white set. I still find that a mono picture is ok and even adds a surreal or period look as well as having very good definition which was better than some early colour sets. I've seen some of the old wartime film that has been tinted (WW1 in colour type programmes) but I'm not sure if it adds much. Content and decent scrips are of far more importance as I see it, an early B&W Dads Army or Steptoe are just as watchable and funny. I've also seen 3D films and feel these are often written around the technogolgy , rather than a decent plot, to give us ladders , trains , elephants or whatever coming "out of" the screen.
I do agree up to a point about the loss of the analogue signal , yes we have more choice now in terms of viewing but we have had energy hungrey digital services forced upon us.