I have 4 kids aged 1 to 6. We've never monitored milestones that closely. What can monitoring really help with anyway? All of the kiddos we have were fast at so

I have 4 kids aged 1 to 6. We've never monitored milestones that closely. What can monitoring really help with anyway? All of the kiddos we have were fast at some things and slow at others. As someone else said, unless the kids are extremely behind at something and need professional assistance (which will be pretty obvious once they are in daycare or school), there is no point.