This is exactly it, you develop a world of associations with people who you would not have met otherwise, the point of view of those who have gone before you is invaluable.
I will also add though that in my experience freemasonry at its core isn’t a social exercise, many go into the fraternity and receive all the accolades in the world from Brothers, masters, grand masters etc etc but they are missing the true and unique value of freemasonry, the information required for personal development is shown but its up to you to internalise it and unpack the true value in the fraternity.