Sorry this one is late!
TNG. I had watched it sporadically before, but I really got attached to it when I had just turned 14 and my family was in the middle of a temporary moving situation. We were staying at a hotel suite for one month, my sister and I had nothing to do while our parents did moving and househunting things all day, and during that one month I watched three hours of TNG every day (an insane amount of TV for us). Voila. A fandom was born.
TNG. I had watched it sporadically before, but I really got attached to it when I had just turned 14 and my family was in the middle of a temporary moving situation. We were staying at a hotel suite for one month, my sister and I had nothing to do while our parents did moving and househunting things all day, and during that one month I watched three hours of TNG every day (an insane amount of TV for us). Voila. A fandom was born.