Honestly, the buttons are there for emergency, I mostly drive it by hotkeys (Shift+? to see the list). Do you think buttons could be placed differently?
1. Tracking video games, what my timer was originally for. Each game I'm currently playing gets its own task.
2. Tracking day job activities. My first programming job had mandatory time tracking and I so happened to have a right tool for it. A decade later, job task tracking transformed into a habit, which helps me stay organized a lot. During a work day, I often switch between different activities, like reading emails or working on a Jira ticket. At the end of the day, I mark all of these as done in a couple of key strokes.