For me there is no such thing as "The Golden Years". Yes, there is a lot of highschool, moe and fanservice anime nowadays. But fanservice has always been around and even thought nowadays Highschool slice of life and moe are the most common genres in anime, in the 80s and 90s there were other genres that were insanely common, like action shows.
Other thing: Back there there was no internet, and most anime simply stayed in japan. Very few anime were brought to the US, and they only brought ones that were marketable(and by that I mean marketable to children and teenage males). Now, with the internet and fansubs, people get to know every anime that comes out, and this makes people have contact with all the soulless generic trash that comes season after season.
Anime is not viewed as an art form and an way to tell deep and amazing story lines by the creators and studios(Most of the time), and that's why you see so much fanservice and moe stuff around. Since it sells, other people will make similar stuff to get money.
Final thing: Despite all of that, there is still a lot of fantastic (or at least very good) anime coming out nowadays. Even we are limiting to only 2006 onwards there is Death Note, Baccano!, Gurren Laggan, The Girl Who Lept Through Time, Kara No Kyoukai, Rebuild Of Evangelion, Madoka Magica, Fate/Zero, Fullmetal Alchemist Brotherhood, Higurashi, Monogatari Series, Kids on the Slope, Spice and Wolf, The Haruhi Movie, Mawaru Penguindrum, Summer Wars, the list goes on and on.
Not saying that the 80s to the early 2000s anime were worst, god no. In fact, most of the anime I consider to be the best of all time were released in that time. The original Fullmetal Alchemist, Spirited Away, Cowboy Bebop, Trigun, Utena, Grave of The Fireflies and Princess Mononoke just to name a few, but that anime as a whole was better? No.