As the subject is similar to another here in the "general" section, I'll just transcribe what I stated there.
Born November 21, 1962, I was not quite 4 at the time the original series debuted and thus really not old enough to have any clear memories of the show.
It was late August 1972. My father and I had just moved into an apartment mega-complex. Returning to the two story "townhouse' he had rented, my father told me he had seen two boys roughly my age playing at the edge of the newest building, still under construction. He suggested I meet them.
The kids were playing with Tonka diecast metal vehicles upon a large sand pile. I introduced myself and quickly we were asking one another's favorite games, toys, activities and TV shows. One of the pair, Kyle, asked if I watched Star Trek. Being the early 70s, the series had recently hit the syndication market (where its popularity far outgrew the numbers it garnered during its initial primetime run). I confessed I was not that familiar with the series. For the last couple of years I was mesmerized by Irwin Allen's "Voyage to the Bottom of the Sea".
Obviously, Kyle had been watching Trek, hence his question. He liked to act the role of Kirk in backyard games of "let's pretend" and given my near black hair and ever so slightly taller stance, he thought I might do well in the role of Spock. I had little knowledge of the show's premise other than a crew of hundreds flew in space within a ship much larger that the Jupiter 2 from "Lost in Space". Oh, and this Spock fellow had pointed ears. But i reasoned if he would be willing to let me play with him, I'd better "educate" myself and start watching those early reruns.
After a few weeks of daily airings, I kinda' had the "basics". This Spock was supposedly very smart, a scientist and he let nothing get him frustrated or angry. That latter attribute really appealed to me as I did have issues trying to control my temper. Here was a character I could aspire to emulate.
Anyway, soon Kyle and I were running throughout the complex, pretending to be intrepid space explorers. the decorative weeping willow trees (the apartments were called "Willow Bend") became alien lifeforms with spindly, grasping tendrils. The 3 or 4 laundry-mat structures became strangely advanced computer centers (ala Landru). The sidewalk sections that had tall solid retaining walls (It was very hilly terrain) served as military trenches. The thematic hanging globe lamps (with dimmer switches) suspended in our respective domiciles could a Romulan cloaking device, Sargon's "receptacle", or even a strangely glowing planet or star around which we could "orbit" our AMT Enterprise model kits. Emptied makeup compacts were our flip lid communicators and a binocular case with a shoulder strap was my tricorder. Mind you, this was still 2 years before AMT released its "Exploration Set" model kit/play set of the phaser, communicator and tricorder. (We thought we were in hog heaven when we finally got and built those kits!)
Overly long anecdote cut short, I started watching 1972 to "win over" a new friend, but very quickly, it turned interesting unto itself.