For the longest time, left-hand guitars didn't exist. Or they were too rare and expensive for most people to get their hands on. So most left-handed guitarists had to flip the guitar upside down. ... And if you happen to know a few guitarists, chances are one of them plays this way.
Is there such a thing as a left-handed guitar?
Answer: Yes. Left handed or “Lefty” guitars are strung the opposite way from conventional guitars. The tailpiece, bridge saddle and top nut are all like a mirror image of the conventional designs. One of the most famous guitar players of all time, Jimi Hendrix played left handed.
Are left-handed guitars necessary?
You don't even necessarily need a left-handed guitar, as you can flip a right-handed guitar over and use it as a left-handed guitar. Just be aware that some guitars are designed asymmetrically, so if you play it upside down it might feel a little strange.