Seems reasonable, but if you work for a large company, you can't guarantee that a major release (which is a production change) won't cause any unexpected harm.

Seems reasonable, but if you work for a large company, you can't guarantee that a major release (which is a production change) won't cause any unexpected harm. I have worked with quite bit organizations, and deployed on Friday and wasted my entire Friday-night and Saturday morning, rolling back the +130 components that an app had. If you are a small company, or you do not do extra weekend shifts, I understand your point. Elsewhere, you just want to live an adventure every Friday.