At various times I've been mainly into reading, video games, hiking, and running, but those tend to go in waves, rather than a constant focus, and were rarely things that I was hyper focused on even at their peaks. I've invested a fair amount of money and time into all of them, but I don't know that they were necessarily driving forces in my life.
One driving force, however, was learning German. I invested thousands of dollars and 10 years of my life into that, so I guess that counts.