I don't technically make films anymore. I used to wear all the hats (write, direct, DP, edit etc).
I started because in primary school a teacher saw that I was good and so taught me how to do video editing, which I then began with my friends. Working together to create something that somebody else enjoyed was always satisfying. I've always loved creative writing, and films as a medium attract me quite a lot, so creativity has always been an interest of mine.
These days I am a cinematographer (and a camera assistant, gaffer or best boy on larger productions) and the experiences I gain on set are at the peak of my own personal satisfaction. The relationships you have on set, adjusting a light and looking in the frame and everybody saying they like the shot, the rush of completing extremely difficult shots that are complex in focus or in movement or in a tight space.
While I am not yet at a point where I am living off it, I literally cannot see myself working any other job. For years, since about age 15 I've known this is all I can do, and I just have to keep working until I really get there. Of course ultimate goals could consist of 'Hollywood and all it's glory', but I'm really not aiming for that; the relationships and experiences you gain every day while simply earning enough for a living (and potentially support a future family) are all my goals need to really desire. Of course every goal you achieve you'll always be looking at the next greatest thing you can do.
Making films, watching films (or TV; stories) is at the peak of my satisfaction levels.