well... worms are actually really important. they make the soil richer and like any animal has an important part on many other creatures. if the creatures that eat worms and are eaten by worms have other enemies or food and if there are enough animals that make the soil richer it might not be that bad but just worms diying could result in serious consequences
(not sure if anything here is correct XD. if its wrong please ignore my stupidity)
well, the dirt would be cleaner XD. jk uh probably a lot of things. its always those what if questions that are hard to answer. its like, if the meteor hadn't struck the earth, we'd all probably be dinosaurs. jk
The Earth would become overpopulated, we would start fighting about food and water, overcrowded places all over the place. Let's face it, life would suck with no death