Sometimes you want your web page to 'stay alive'. That is, if a user is filling out a complicated form, you do not want the session to time out before they are finished. The user could get very angry and rightfully so: You might even get yelled at! It...
Being on the software "bleeding edge" is similar to being the "point man" in combat. I generally avoid being the first to adopt new technology until some other poor bastard has led the way…and occasionally paid a price: The price being missed deadlines...