Looking ahead to the future and being able to sustain a healthy lifestyle should be the main focus for anyone. Being active has been shown to have numerous health benefits and will even add more years to life. Everything else revolves around health and expanding longevity. Poor health limits ones ability to perform daily tasks and can lead to premature death.
Experiencing the same medical condition or mental illness you saw a family member or a friend have to go through
Hearing tragic news from a doctor that you have underlying health conditions such as cancer, diabetes, etc...