The green and red

The thing that have already involved in our society since a very long time ago.
The thing that everybody will be in touch everyday.
The thing that wasted me a lot of time to wait at it.
The thing that save a lot of people.
And also the thing that kill a lot of people.

I'm not sure whether what are you thinking about,I'm just talking about a traffic lights,haha.
It's a fact that traffic light involved in our society since 18th century,obviously,very long time ago.
Indeed,the involvement of traffic lights makes the road system go safer and easier for the people,but at the same time,there is also a lot of stupid idiot that didn't comply with the traffic rules and cause many injuries and deaths.Nothing is perfect,but still,we have to appreciate to J.P.Knight,the promoter of the traffic lights.
And yes,that stupid lights wasted me a lot of time,especially in the morning when I'm rushing to school,and still have to wait and wait and wait.
In these recent morning,I faced at traffic red light,feel fretful,irritable,and can't wait it to turn into green lights,because 24 hours per day is not enough for me now,if it was a living things,I'll surely scream at it and said either "STOP WASTING MY PRECIOUS TIME !" or "I DON'T WANT RED LIGHTS !"