Yes - I’m another left hander.
Actually I’m left handed as well. In some way though I would say the entire population of the world is ambidextrous. We can all learn to do things if we needed and while I understand its what comes naturally, I wonder just how many families altered their child’s natural ability to use a different hand to write with because of social stigmas. Just something to think of anyway 
I felt retarded up until now because I depended on my right hand for nearly everything. My left hand always played the role of “holding” or “steadying” and nothing else. After getting tennis elbow I realized how important it was to utilize both hands so I can share the work load and not further strain my write hand anymore much less my elbow.
I dont know how you guys write though. It hurts bad. Itll take me another 5-7 years before I can write efficiently enough to write notes for school. (hopefully im not in school anymore after that time ROFL)
I just bought a left handed mouse the other day and all I can say its the weirdest thing in the world having the clicker on the right side and right-click on the left side. I still believe your dominant hand is genetic although anyone is capable of being strongly “mix handed” since no actual normal person can just be ambidextrous due to it having to do with the brain hemisphere setup and some abnormalities within said person.
Left handed athletes pwn right handers. Thats why I decided to become mix handed and make my left hand as equivalent as possible ( I know it cant be 100 percent) as my right hand.