Could be a dumb and ignorant ? but here goes..

I am sure I am already some NSA watchlist for FEMA roundups somewhere for being on this site or other fringe/conspiracy sites or listening to Libertarian podcasts or by the things I like, comment or post on, on FB...

For every site I register for etc. I use my email which is my first initial and last name..would it be a good idea to create/use another email address with not such an easy identification of myself? My last name is very unique so there are no numbers or other characters following my address..for all I know there is only person in the world with my given name...