There's a lot of ... ahhhh weight put on how things feel in the hand. Now to diss a piece of audio equipment for it is a bit harsh ... but traditionally one was able to get a feel for quality by heft ... did they spend the bucks to put in a big transformer etc. This has changed a bit with technology but there is still a lot of the old school thinking out there.
In other cases like the handset on a corded phone you need to weight it otherwise every time you picked it up it's lightness would surprise you as feeling cheap (it may also not stay in it's cradle). Even poker chips are weighted to give you a satisfying feel that your holding something of value ... many things which exude quality are weighted.
