Flash on a website - do we actually need it?

just trying to be a Neo-Luddite who uses technology but questions about whether we actually need it. A web page with flash intro will be a perfect example to examine whether we actually need those fancy but not necessary technology. Just imagine there's a website selling books online and how annoying those flash intro (though most of them have 'skip intro' functions) will be...also considering a web site only has a couple of seconds to draw people's attention, any redundant technologies simply shows how inconsiderate some web designers are...