Thoughts anyone on where is ET?
E.T. stayed home.
Because interstellar travel is either impossible or infeasible on any timescale that would be justifiable in the resource allocation systems of any sentient life form, and interplanetary travel, while far more doable, isn't likely to be noticed across interstellar distances.
Simply put: we could easily be surrounded
by intelligent life forms both far ahead and far behind us technologically, but we would never know it unless one of them developed the means to physically visit our system. Apart from the fact that they have no specific reason to visit us (just one system among thousands in the neighborhood) they also probably lack either the motive or the means to do so.