Do you need blinker fluid?

I know this is a subject we all have had at one point in our time span of driving a motor vehicle. Whether we use them or not, this is the question of the day: Do you need blinker fluid?
I know most will say that is a blonde joke, but this is getting ridiculous.
Driving home on Wednesday night I had not 2, not 5 but 10 people cut me off; coming into my lane or coming in from an on ramp that extends to another exit ramp.
Why do people refuse to use their blinkers while driving? I am not clairvoyant, I do not know where

I am not patting myself on the back to say I am a great driver, (I am an occasional speeder) but I use my blinkers, (even to turn in to my driveway). Maybe this extends to my father and mother teaching me how to drive correctly or maybe I am a courteous driver, which ever the case may be, I use my blinkers.
Did the motor vehicle manufactures put them in our cars as an optional feature? No, they were meant to be used as our brake lights have a purpose. Brake lights are letting the driver behind you know they are either “A” slowing down, or “B” coming to a stop. So, why not use the blinkers? Laziness, talking on the cell phone (another pet pea of mine), stupidity or they don’t know they have one. So the purpose of the blinkers: You are moving into the left lane, right lane or turning onto another street or maybe a drive way. This is common since people, so why is it so hard to use them? Can anyone help me with this dilemma?
Now to be fare, as I have stated, I use my blinkers and there are people out there who want let me over. I assume these are the people who don’t use theirs because they don’t know what the blinking means. Maybe they think I have decorations on my car, you think?
Now thought of the day…….
"Go ahead, make my day."
~Clint Eastwood
