Well, in the broad sense of being attracted to 'ponies' as it stands, I think I already have gotten tired of the show. I'm extremely capricious when it comes to shows, because I burn through them in days, and get fed up with the art, plot, and music flaws. However, MLP is something special - it has an emotional component. Whether in canon or fanon, d'aww moments are never rare; it's just so heartwarming and beautiful most of the time.
I'm thankful for how this show has changed me.. I'm also thankful for the coherence and strength of brony internet communities. I don't think this show has to necessarily connect us, just a mutual goal or set of values. Core beliefs, if you will. Love and tolerance.
And that's why I think I won't get tired of this show, as long as it has that special moral and emotional appeal.