system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Flat head screws should never be used

Not the most intellectual CMV ever, but a strong view nonetheless.

Flat head screws are the bane of my life. I live in an old house and whenever I do repairs I run into flat head screws. I appreciate, at the time, they may have been more common due to manufacturing capabilities. But I still see people using them for non-aeathetic reasons and come across them on newer projects.

I can't use a drill driver, as the bit slips out. I have similar problems manually if I need to apply high torque. When that doesn't happen, the screw head warps and becomes near impossible to remove. I've spent 30+ mins on individual screws before and have reverted to angle grinding them away at times.

They are the only screw head that is essentially two dimensional, a third dimension is necessary for grip of the bit and to apply torque evenly. They are also the only screwhead with open ends that further allow this slipping out. Each of those facts is a sin and both combined are an atrocity.

They are inferior to all other screw heads.
gpt
Flat screw heads can be screwed or unscrewed with a knife or any flat thin object.

It isn't the best screw (robertson for the win), but it is a useful one in some cases.

Screws on glasses are flat so people don't need a screwdriver to fix their own.