If someone has grown up with only TV shows and movies from the last couple decades, then something older can be very hard to get used to.
At the time of Star Trek, television was still relatively young, and TV shows were not frenetically paced and filled with action like today's genre shows have become.
For quite a while, TV productions were more like stage plays than movies in a lot of ways, so I would suggest approaching Star Trek from that perspective. I would also argue that TV science fiction was more influenced by literary SF than it is today.
Also try other shows from that time, such as The Outer Limits and The Twilight Zone.
Kor
At the time of Star Trek, television was still relatively young, and TV shows were not frenetically paced and filled with action like today's genre shows have become.
For quite a while, TV productions were more like stage plays than movies in a lot of ways, so I would suggest approaching Star Trek from that perspective. I would also argue that TV science fiction was more influenced by literary SF than it is today.
Also try other shows from that time, such as The Outer Limits and The Twilight Zone.
Kor