What a smartwatch does well
Continuous biometric tracking (heart rate, ECG, blood-oxygen, sleep), GPS and pace tracking, contactless payment, notification triage, and music control. The Apple Watch Ultra and Garmin Fenix range have become genuine field instruments for ultra-runners, sailors, and divers - measurably more useful than a mechanical for those activities.
What a mechanical does well
Decades of service life, no firmware obsolescence, no charging, no data exposure, and a craft tradition that connects the wearer to four centuries of horology. A well-cared-for mechanical watch will be functional in 50 years; the average smartwatch loses software support within 5–7 years.
The honest verdict
They are complementary, not competitive. Athletes wear smartwatches for training and a mechanical socially. Collectors wear a mechanical daily and a smartwatch for sleep tracking. Forcing a choice typically reflects budget rather than preference - both categories have low-cost entry points worth owning.