People have a very nasty habit of going “ GOGOGO FAST FAST FAST GAS GAS GAS” and completely ignoring them if they’re even slightly off the beaten path. Eye of Azshara is particularly bad about this.
If you’re doing a random daily, and there is a world quest there, it’s nice to get a bit of extra rewards for it. I’m aware you can solo it at certain gear levels, but I’m specifically talking in random groups.