I'd say it depends on how we view the purposes of aquariums. Do we view it as something to accentuate a room and the fish just pretty colors that move? If so, then yes I could see someone losing interest, much like you'd lose interest with furniture purchased years before in favor of newer styles.
Or, do we view aquariums as pets? If so then we'd be less likely to lose interest and more likely to gain more interest as we become attached to the stock / plants. In efforts to make the tank(s) more "realistic" we look to add better decorations, invest in better equipment and even go as far as to best mimic the stock's natural environment.
75g Planted Barbs Denison, BlackRuby, Tiger, Albino Tiger, Green Tiger, Cherry, Gold, Checkered, Odessa.
NonBarbs Cardinal, Neon, RummyNose, Bloodfin Tetras, Z. Danios. 1RTS. Amano, Bamboo, Ghost & RCS. 20g Long Shrimp Tank RCS, Tiger, Amano.