[CupcakeDolly]

If you're talking about north american cartoons (cartoon network and nickelodeon), you have to keep in mind that their target audience is young children, so detail isn't especially important, as long as it's flashy and can keep a kid's attention. If the target audience includes adults, detail is better appreciated, which is why disney has to constantly try to outdo itself, since adults are the ones taking their kids to see the movies and reviewing them.

Personally, I prefer to look at the whole piece (in any medium) and decide whether I like it or not. Even if it isn't very detailed, or just looks downright lazy, if the subject itself is interesting I can still appreciate it.

For example - I'm a huge fan of Steven Universe. The art style is simplistic, but the animation makes it a downright gorgeous piece of work at times (not to mention how great the story and characters are).