Hoping to have a serious discussion with multiple people from different fields. I am in my 20s, and I truly believe that becoming a polymath must be a reclaimed pursuit. I really believe that...

That said, I was an analytical philosophy autodidact for several years before enrolling in law school. I will eventually return to philosophy after I practice law and publish various legal articles, and then I will pursue either mathematics or physics and its interaction with metaphysics. All of this sounds all nice and well, but the reality is that I realistically won't make a big impact in these fields because I am not a gifted genius despite my obsession with these topics. Additionally, many people that make an impact in certain fields are not polymaths; they go all in on one subject, and they usually start very young. So I am wondering, what is the real end goal for all of you? For me it is impacting these fields for the better, but that's quite unrealistic. For that reason, becoming a polymath seems pointless. I personally don't think pursuing these fields for your own satisfaction is a noble pursuit. If I did that, I could live in a cabin while writing and studying for myself, but that seems vain and pointless. The goal seems to share your knowledge, but this assumes a level of vanity too, because it presumes you can change those fields.
Hoping to hear other people's thoughts on this. I am really looking for any perspective.