Why Wait?

I manage to sell a few copies of my charity raffle tickets to my colleagues. Many of my colleagues are generous when it comes to donation. They are generous when it comes to donating money if and when I approach them for donation. Maybe they know that their money will definitely go to the target charity.
Many, however, will not take the trouble to go to these charitable organization to donate. It is troublesome for some of them who have many chores to attend to.
One of my colleagues commented that when she retires then only will she participate in charitable activities.Why wait until retire? Why not start now? How sure are we that we are going to be alive tomorrow....and retirement is a few years away? If we want to wait for this and that, then we will never do it. By that time we may not be in the position to help or we may not be around to help.