Part of the quality of animation is the frames per second. Old Looney Tunes are about 24 frames, along with classic Disney movies. That number has decreased over time, and reference frames have increased. Scooby Doo, while awesome, has some of the highest of these frames where all that moves is the mouth. Having cartoons with 11 - 14 frames decreases the costs. Part of the issue is that until the early 90s, cartoons could basically be a commercial for toys and merchandising, subsidizing the toons. Factor in rising popularity of video games, general dislike of cartoons by the mainstream (forgetting about how popular Bugs Bunny, Fred Flintsone, Popeye, etc were with adults), and rising costs of material and labor, its little wonder cartoons have declined in the past 10 - 15 years. There used to be so many good cartoons, we took it for granted. Now it seems we wait for that one break out hit, only to see the network kill it in favor of infomercials.
Not to say all cartoons in the past were good. For every GI Joe there was at least 2 Turbo Teens or Giligan's Planets. Did you know there was a cartoon hawking Rubix Cube?? Mr T had his own show, as did Gary Coleman as an angel. Not only was Alf a live action sitcom, but he too had a cartoon. But I'd still watch those over Sonic and Yugioh.
The animation industry was in complete disarray during the 1970's and 1980's. Dinsye pretty much kept the animation industry alive during the 1980's with hits like The Little Mermaid and Beauty and the Beast.
In my opinion, Who Framed Roger Rabbit may have single-handedly revived interest in the old style of cartooning, hearkening back to an era where cartoons were edgy and wacky, and cartoonists like Tex Avery, Chuck Jones, and Friz Freleng were the biggest guys in the industry.
After the success of Roger Rabbit, even the once mighty Warner Bros. had decided to reignite their animation studio in the late 1980's, producing hits like Tiny Toons, Animaniacs, and Batman: The Animated Series.
Beauty and the Beast was 1991, an
The Little Mermaid barely counts as the 1980s as it came out November 14, 1989. Even counting Mermaid, Disney released a total of 5 animated movies in the 1980s, the other 4 being
The Fox and the Hound (1981),
The Black Cauldron (1985),
The Great Mouse Detective (1986), and
Oliver & Company (1988). Disney didn't really have their animate Renaissance until the 90s. The success of
Who Framed Roger Rabbit though did spur Warner Bros. to re-start their animation division the next year and led to the Disney Renaissance
John Kricfalusci is funny, but not sure he should be allowed total control over stuff. When MTV revived Ren & Stimpy for him (as
Ren and Stimpy Adult Party Cartoon), he gave us stuff like making Ren and Stimpy gay lovers.
Animation on TV was kinda lazy in the 70s and 80s, partially because many of these shows were merely produced as 22 minute long infomercials to help sell toys (like Jem, Transformers, and especially He-Man).