"I'm going to be working the next 25 or 30 years. People like me, if we want, number one, for no benefit reductions for our parents and our grandparents, number two, for the system to survive and exist for us, and, more importantly, number three, for the system to exist for us children, we are going to have to make reforms to that system"

In this quote, Marco Rubio is stressing the value of making reforms to the existing system in order to ensure that the benefits of the system are not reduced for the elderly, and that the system will endure and exist for future generations. He is suggesting that people like him, who are in their prime working years, will need to act in order to ensure that the system is sustainable for the future. He is also recommending that the reforms that need to be made are not just for the benefit of the existing generation, however likewise for the advantage of future generations. By making these reforms, he is suggesting that the system will be able to survive and exist for future generations, and that the benefits of the system will not be reduced for the senior.