A New GPS Watch Every 2 Years

I arrived home from the school run and found my new Coros Pace 2 watch waiting for me. I had been getting anxious as the replacement was delayed because my previous watch was a limited edition, and it took a little longer to figure out what to do. Nevertheless, I must say that the Coros customer support was great, and despite being a week without a watch, Coros remains my GPS of choice.
In fact, I was trying to figure out how many sports watches I have owned over time and how long they have lasted. Here's my list:

• Garmin Forerunner 405CX: Fantastic. My first-ever GPS watch, and I absolutely loved it even though it took forever to acquire the signal. I used it for three years and replaced it once.
• Garmin Forerunner 910XT: Phenomenal. The brick, oversized for my arm, but it would never miss a beat. I used it for five years.
• Garmin Forerunner 735XT: Let down. Short battery life and very slow to acquire the signal. I used it for two years.
• Garmin Fenix 5S: The final straw. Very expensive, short battery life (meant to last 15+ hours). I used it for three years and replaced it once.
• Coros Pace 2: Current, love it. Long battery life, very light, fast to lock in GPS. I have used it for 18 months and replaced it once.

On average, it seems that the watches I have purchased last between 18 months and two years, either because they malfunction or because they are plagued by issues, and I eventually give up and upgrade.
Considering that I run an average of 5,000km a year and wear and use the watch 24/7, perhaps two years is not a bad result. What are your thoughts?