I never saw it as a love story, in fact much of what fans speculate being the love story in this game is up for debate imo.

Between the two choices, I feel its more about restoration but I feel its a distant second theme. I generally see it for its main theme of Life and its delicate balance. Aerith's death, Sephiroth and Shin-Ra's disregard for it and the cast learning what's truly important instead of their petty needs.