We all make typos. None of us have achieved perfection. That being said, I'll be glad when people stop using "of" when they mean "apostrophe ve". Or when auto correct is improved to fix it automatically. Wrong: must of, could of, would of, should of. Right: must've, could've, would've, should've. I'm not singling anyone out. I'm surprised how many people make this mistake. Maybe some of the problem is faulty speech to text programs?
Note: This was posted on my Facebook wall. Authorship is uncertain as Facebook account data downloads don't provide that information. Context is lacking. Included for historical purposes.