Great question chelseastyles! Lots of inventions are great for different reasons – for example, without antibiotics, we would still die from lots of infections that we don’t even bother about nowadays. Likewise, inventing ways to use electricity has meant that all sorts of technology are possible! So I guess the answer to your question depends on your personal opinions. Here’s an interesting suggestion though: what do you think the world would be like without buildings? If we hadn’t have invented houses and other means of sheltering ourselves, we’d still be stuck in caves or under trees. That means that we wouldn’t have schools, hospitals, hotels, well… anything really!