I stopped wearing watches shortly after I started working in I.T., having something on my wrist that regularly gets snagged on a keyboard and/or hits buttons when I don't want it to is a massive hinderance.
I still don't see what the point of the 'Smart' watch is, as far as I can tell they don't do anything that a smartphone can't already do but they do it less well and with a much more limited battery life.