Cannot imagine right !!! Microprocessors play a very important role in out life, without it there wouldn't be anything ? here anything means everything. Yes, they play a major role in our life, without it there wouldn't not be entertainment, studies, companies etc, the only thing would be mechanical devices which were the first.
Here is a wonderful video from Intel, released to celebrate their 40 years since the launch of 4004 microprocessor. Remember of 4004, we have used these microprocessors in calculators.