The question here is whether technology helps the world, not whether the disadvantages of technology outweigh the advantages of it. So yes, technology certainly helps us and the world.
Technology is what made machines possible. It's what made TV, the Internet, airplanes, and even this site possible. Technology has made our lives much more convenient (especially in terms of transportation), much safer (medical technology) and has allowed the wide spread of knowledge (through the Internet and mass media).
Technology saves lives. It's not just medical technology, such as complex scanning machines that do it, but basic things such as heaters and mosquito repellents as well. Heaters save many people living in cold regions from freezing to death (literally) and mosquito repellent saves a lot of lives in regions such as Africa, where people are plagued by deadly, disease-carrying mosquitoes.
Technology is what allows faster and larger production of food, which is what combats the problem of starvation and drought.
All in all technology does have its benefits. It does help the world, though some may argue that the disadvantages outweigh the advantages.