We need new and shiny things to challenge us, maintain established neural pathways and develop new ones. It's a physiological need for healthy brain functioning.

Yes, it is childlike, but there is no shame in that-- if anything, history is proving more and more that the generations who maintained that everything must be as repetitive and miserable as possible had no idea what they were talking about-- and are now dying with active diagnoses of dementia and Alzheimer's.