I can't say for sure whether the world will be a better or worse place after 100 years, because I think one part will change for the better, while another part will be worse. In the technology, everything has a different type. Many new machines have been invented. Those things will help people more efficiently.
You can finish every work by "one touch"; you just hold a small remote, and it will order everything. For example, the car will drive to your house by itself according to your orders; the TV will choose the best program and tell you what is the important news for you today. We will have no traffic jams, because the cars will fly in the sky; you don't need to drive them, because everything is automatic.