Mom and Dad lived 5 miles from us. Mom died from a massive heart attack in Jan. 2003. Five months later, to the day, Dad got killed when the car he was working on fell on him. He was 84. However, at the time of the deaths there were no hugs left unhugged, no 'I love you' s left unsaid. I miss them to this day but everything that we could do for them we'd done so there was no regrets. I can't imagine having to deal with guilt and grief at the same time. So, that being said, do whatever you can for your parents while you have them because they won't be here forever.