A Queensland mother has delivered an emotional victim impact statement in court, describing the unbearable pain of losing her young son to a drunk driver and comparing the grief she now lives with to a devastating disease.

The woman addressed the court during sentencing proceedings for the man responsible for the crash that claimed the life of her nine-year-old son. Speaking directly about the ongoing impact of the tragedy, she said the loss had changed every aspect of her family's existence.

"Grief is like cancer," she told the court. "It spreads through every part of your life."

The court heard that the boy had been travelling with his father when the family's lives were shattered by the actions of the intoxicated driver. The child's death has left his parents and loved ones struggling to cope with a future they never imagined.

In her statement, the mother described the agonising decision to say goodbye to her son after doctors informed the family there was no hope of recovery. She spoke about the dreams and milestones her son would never experience and the profound emptiness his absence has created.

The emotional testimony painted a heartbreaking picture of a family navigating unimaginable grief while trying to honour the memory of a child who was deeply loved.

According to reports presented to the court, the offending driver had been drinking before getting behind the wheel. The incident has reignited discussions surrounding drink-driving laws and the devastating consequences reckless decisions can have on innocent families.

The victim's mother used the opportunity to deliver a powerful message not only to the offender but to the broader community.

She urged motorists to think carefully before making the decision to drive while impaired, warning that a single choice can destroy multiple lives forever.

Family members described the young boy as energetic, caring and full of potential. His death has left an irreplaceable void within the family, with special occasions and everyday moments now serving as painful reminders of what has been lost.

Road safety advocates say victim impact statements play an important role in helping courts understand the far-reaching consequences of dangerous driving offences. Beyond statistics and legal proceedings are families whose lives are permanently altered by preventable tragedies.

As sentencing proceedings continue, the mother's words have resonated with many Australians, highlighting the lifelong burden carried by those left behind.

The case serves as a stark reminder that drink driving is not a victimless crime. Decisions made in seconds can have consequences that endure for decades.

For this Queensland family, no sentence can bring back the son they adored. Instead, they continue to navigate a grief that, in the words of his mother, spreads into every part of life — a pain they will carry forever.

The offender remains before the courts, with sentencing expected to take into account both the seriousness of the offence and the devastating impact outlined by the victim's family.