Necessity is the mother of all inventions, however obsession of getting things repaired by yourself, leads your passage to become a "doctor" no matter if a machine is like human, its heart is like engine and brain what you programme or upgrade, so why can't be the doctor of Machines.
I was raised in a middle class family, where we have to cut our expenses ,so as to save, my father was earlier a shop keeper used to run an electrical shop (now retired) at the age of learning names, when I started learning alphabets my father introduced me to the world of motors, batteries, screw drivers and wires, he used to bring scrapped equipment’s to home and I used to play with those toys, and that became the part of daily routine.
The original proverb is : Necessity is the mother of invention.
Your sentences are too long, which makes them hard to digest. There is no advantage in having such long sentences.
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