The Modern View on Marriage and Divorce- Single Parenting or Staying Together for the Kids?

Is it better to end a tumultuous marriage and become a single parent, rather than trying to make it work? Having experienced it from the child's point of view- could it work for the sake of maintaining stability in life and holding together hope for future relationships? Do people understand the profound effect it can have; having to watch parents go through numerous relationships, lack of confidence, getting by on one household income? Not only that, but emotions that come with being shared with parents, and feeling second because they need to start their new life from scratch?
Mainly- What is it like when your parents stick to it?