#1. so their kids dont hang on it and/or knock it down. it looks pretty good. they have room for all their components.
#2. because a lot of people like new technology but are limited by the space of their entertainment centers. a 42inch dlp will not fit into a center built for a 36inch tube....but they dont want the tube technology due to the weight of it...so they go for lcd.
#3. because most good lcd's around 17inch or bigger will be HD anyways and "it'll be ready for the future".
basically, it is what it is
#1 buy a plasma TV, wall mount, Installation, and then buy a full size stand to put under the mounted plasma.
#2 buy an LCD tv and then put it in a entertanment center.
#3 buy an HD LCD for the kitchen to hook up standard cable.
Ive seen lots of picture of people doing this, I got to know the answer, WHY.