SUPERFOX5

You're not alone in that boat. I always kept up with the episodes as they came out and the final one was no exception. I cried during the last few minutes of the last episode but it was more tears of joy and nostalgia and gratitude than anything else. An intense emotional experience of reflecting on this ride I've been on for about ten years, to be sure, but it's an emotional experience I don't regret for a nanosecond.

I'm quite satisfied with the ending - they took care in ending the show with dignity, resolving many plotlines while also leaving various elements open-ended enough for fanon and G5 to build on. Watching it gave me a lot of closure.

Another way to look at it: fear and sadness are both negative emotions. The fear will weigh on you forever until you face the thing it's about and get to the other side. Then the fear will go away. Forever. You'll never again be afraid of the moment you finish the show once you've finished the show.

The sadness of the moment isn't a sure thing but even if you do experience it that way, it won't weigh you down forever the way that avoiding something you fear does - you will be able to cherish and rewatch FiM as many times as you want, and as much or as little of it as you want, forever. You'll be free to think and talk about the series in its entirety. And you'll be able to take personal satisfaction in finishing something you started. In having been there for the entire ride. Which puts you in a great spot to hop onto another with a clear conscience - like G5.

It's not so different from finishing a good book - the book won't stop being good just because you reached the end (and heh, people even get very annoyed when a book's author publishes it as they go but then abandons the project before finishing it). This video of a therapist analyzing the Pixar movie Inside Out goes into a lot of depth on how we'd actually go insane if we didn't experience the emotion of sadness - that, even if it's unpleasant, it's an emotion that's critical for finding closure and moving forward with our lives. It analyzes the other emotions, Joy, Fear, and Anger, and their value in the sentient experience as well.

I still tear up whenever I even think of the final song. 

I just wish the Mane Six were able to stay together.