September 1966, my mom (an excited Outer Limits/Twilight Zone fan) plunked down my 5 year old butt next to her and scared me sh*tless watching "The Man Trap". It wasn't her favorite show (she liked the anthologies much better) But it became MY show and I tried desperately to be good so I could see each and every episode (didn't get to see them all first run..sometimes I was a little hoodlum)
On Christmas 1967 I received my first "Enterprise" model kit..and I, with help from my dad, built it and it survived for the better part of a year of hard play (with many repairs along the way)
By 1968 (when the 3rd season aired) I was allowed to say up VERY late on Fridays to see Star Trek..I felt almost like an adult being allowed to stay up so late. In 1971 I started reading the James Blish adaptations..and followed them all the way until his death..
In the 70s, when the re-runs became popular, I found more and more
that my favorite show was even better than I remembered (even if the only station running it where we lived had a picture quality like the following..)
In 1975 I was immersing myself into the local fan scene with a membership in the Sacramento Star Trek Association for Revival or S.T.A.R. and became a part of the local amateur conventions held at Sacramento City College and the big 1976 con at Cal Expo.
I bought Starlog magazine and kept my inner fan happy with "The Booklet of General Plans" and the "Starfleet Technical Manual" modifying several AMT kits to match the ships in the manual..and studying electronics in school (Good old Scotty was my favorite character and in a small way I wanted to emulate him)
I built all the model kits I could get my hands on.. then heard about Star Trek Phase II which became a movie that re-started the franchise for a new era.. TMP, though a slight disappointment, was still New Trek and I went many times after seeing it at it's local premiere.
As a young adult, I played the "Starfleet Battles" boardgame but the USAF took up most of my time..my fandom didn't wain but became more individual in nature with all the movement a military career required. I still built any new kits (based on the movies) and saw each film several times after catching them on the first night..
In the 80s, the Cons became more and more commercialized. After TNG it seemed that everyone was a Star Trek fan.. but I continued following my individual path..
getting my sons exposed to Star Trek in all it's forms..
but the best damn time to be a Star Trek fan was the mid to late 70s..when we the fans "owned" it in our small way..Before it became the corporate juggernaut it is today..