My "dark ages" lasted for 25 years, from the late 80s till last year when the LEGO Movie was released and my son caught the LEGO bug after watching it. We started to collect the sets from the movie (we have all but the polybags and the Seacow), and I enjoyed building them so much I got the Parisian Restaurant for myself and got back into it.
I recently found some of my old LEGO in storage at my parents' house. It was handed over to my little brother when I stopped playing with it and lots of it was utterly destroyed, as in physically bent and broken. I had some trains and classic Town, including a police station, Shell Service Station, and hospital, some late classic space and early Futuron, a lot of Lion Knights/Black Falcons Castle stuff from the mid 80s, and all of the very first Pirates wave of 1989, including the Clipper and Barracuda. The remaining sails of those were ripped and cut and had drawing all over them, and any pieces that were long and thin enough to break, like masts, lances, etc. were broken. The base plates were also mostly destroyed, torn, or seemed to have big holes drilled or punctured into them (wtf, bro??). At least some of the minifigures and road plates were in decent shape. I really wish I would have kept them to myself or stored them away instead of letting my brother have at them...
I also wish I had re-discovered LEGO in time for the first modulars (Pet Shop is the earliest one I will ever have), the first CMF, and great sets like Medieval Market Village, Haunted House, Creator Expert trains, Imperial Flagship, Town Plan, etc