it's like star wars or trek. if you watched it growing up, it's probably stuck with you. without that attachment, it's probably harder to get into. Who's been around for over 50yrs now... big fan base due to longevity if nothing else.
we bought the new season on appletv but have yet to watch the premier. was able to get my wife hooked on it during tennant's run and then with smith, tho we both fell away for capaldi. cautiously optimistic for the new season.