Whether or not your widescreen DVD displays
horizontal black bars on a 16:9 television depends on the aspect ratio the movie was filmed in. Many films were shot in 1.85:1, which is approximately the same aspect ratio as 16:9, so there should be no black bars of any kind. Films that were shot in other standards, like 2.35:1, will display narrow horizontal black bars on a 16:9 television. There\'s no avoiding it.
You just have to figure that your total viewing time will be split between video from many different sources. So no one viewing session is going to last an extremely long time. I figure I spend about 70% of my time watching standard definition satellite broadcast, which is 4:3, but I stretch it to take up the whole screen, so no black or grey bars. (Yes you get used to it very quickly). 8% watching HD satellite broadcast, 15% playing PS2, and 2% watching DVDs (because my home theater receiver sucks). So, very little of that time endangers the CRTs, and it usually doesn\'t last for very long.
Every product you use is going to receive wear, just do what you can to minimize it, and then try not to worry about it.
