Why does G string (the third one) go out of tune constantly on

Why does the G String on a guitar go out of tune so often? - Quora

Why does the G String on a guitar go out of tune so often? - Quora

Why does the G string on my electric guitar skip F when tuning it down? - Quora

Is it true that when an electric guitar string breaks, the rest gets out of tune? - Quora

Why is my G string flat? - Quora

Is it normal for new guitar strings to go out of tune constantly? - Quora

Why does G string (the third one) go out of tune constantly on electric guitar? - Quora

Is it normal for new guitar strings to go out of tune constantly? - Quora

Why is the 'G' string the hardest to keep in tune? - Quora

Is it true that when an electric guitar string breaks, the rest gets out of tune? - Quora

Standard guitar tuning is in intervals of perfect fourths except for the B string, which is a major third above the G string. Why is standard guitar tuning not all in fourths?

Is it bad to change your guitar tunings constantly? For example, I am constantly changing from standard to DADGAD and ECDGAD. Does this shorten the life of strings? - Quora