Long term and on a large scale there are interesting implications - societal changes that come with an older population, retirement age and how people plan their last decades, improved quality of life in your later years, certain treatments and quality of medical care being only available in certain countries or only to people above a certain level of wealth...
On a personal level, I'm still in my 20s and it really doesn't matter to me right now if I would live to 70, 90 or 110 - it wouldn't impact any of the decisions that I would make in the next 2 or 10 years.