editing on a Mac

Last-last week I had my first experience of editing on a Mac. I understand that most professional video editing and indeed most creative stuff (Photoshop, music editing) is done on Macs due to a generally held common belief that they're better at that sort of thing.
The program we used was iMovie. Originally I was confused at the lack of a timeline, and am still wondering how people edit video properly without one but we found a method of cutting/splitting/trimming clips so were able to make do. The film we turned out after 2 hours was (IMHO) pretty good with music and credits.