Im am new to this but I couldnt find out what the reason for the extendable wall mounts were for. I can see if they need to go around a corner or something from what I read but do people extend them out so that it makes thier viewing distance shorter? Is is just so it is easier to plug in wires? Do people that have 54 inch and larger use these to keep out? I know its alot of questions but if I just plan on using it in my living room, no need to have to turn it what type of mount would i want to use? My viewing distance could be around 14-15 ft. Does the tv look better if extended?