A wise soul, Jeffrey Marsh, once wrote that it's alright if you don't have a purpose in life. I think that I live life well without a purpose. I just 'am', and that's enough. In my life I've mostly just found things interesting, moving from one meaningful moment to another.
The things that I find meaningful today are in some ways quite different from what they were in the past. I no longer turn to astrology to give shape to my personality and manage my interpersonal relationships. Where I once sought to discuss postmodernism early on in conversations, I now rarely bring it up. My interest in science is stronger than it has ever been. If you had told me I would be paying attention to personal finance ten years ago, I would have considered that off-putting. Yet here I am.
So I suppose you could say that it's fine to have a sense of purpose which shifts over time, sometimes pivoting to meet new life stages. That's fine, and if it's working for you, great. But I don't need a purpose to motivate me. There is something at my core which makes meaning just from being alive. I get fulfilment from the people I pay attention to. I am driven by being interconnected with the world, having my small sphere of influence, and trying to share my knowledge with the people who are interested.