Once you have an internet connected phone or PC (as we all do) then the cost in physical or mental effort, time, or money to click another link or watch another video is basically zero. It also gives relatively high levels of dopamine as you're constantly seeing or learning new things.
So with practically no barrier to sitting there longer and a constant stream of stimulation the cost to benefit _ratio_ is incredibly low, arguably lower than anything else we're likely to do regularly. Any real world activity, which all require time and mental or physical effort, yield likely a much higher cost to benefit ratio.
Wasting time on the internet is basically just the path of least resistance and the best "deal" in your own mental economy.
So with practically no barrier to sitting there longer and a constant stream of stimulation the cost to benefit _ratio_ is incredibly low, arguably lower than anything else we're likely to do regularly. Any real world activity, which all require time and mental or physical effort, yield likely a much higher cost to benefit ratio.
Wasting time on the internet is basically just the path of least resistance and the best "deal" in your own mental economy.