Probably like most camera users of the time, I started with colour print film because it was widely available, convenient and forgiving.
Getting more serious, and reading all the photographic mags I could get my hands on, I started playing with black and white.
The photo press was always saying "... if you're serious, you've gotta shoot slide..." but in those early days I didn't have the confidence in my technique.
Long story short... I traded up to a Nikon F4, learned a lot about metering and exposure, grew in confidence and started shooting slides. Still do. Both 35mm and 120, although I think I'm probably 80% b&w now.
The first time I looked at a well exposed and sharp 6x6 slide through a loupe on a light box, I thought I'd been poked in the eye with a kaleidoscope..!
The kids use it, but I don't think I've shot colour neg for over a decade now, although that may change soon as I fancy doing some big "Hockneyesque" joiner type things with 6x4 prints.