10,000 hours is five full work years. That's a really long time. The device itself only costs a few thousand dollars, and it's going to be technologically obsolete long before the lasers wear out.
I can't think of anything I own in my life that lasts for 10,000 hours of use, except for housing. Hell, cars don't last nearly that long, not without major maintenance. 10,000 hours of highway driving is a million kilometers.
The lithium-ion battery in this thing will be toast long before the lasers dim, but 10,000 hours is a relatively low bar. I'm still using a 5-year-old laptop, with no component replacements (other than the battery, and an SSD I installed shortly after buying it) and it still works fine.
I know that batteries wear out in use, and expect that. Not everyone does. I did not know that laser diodes wear out that fast, and I'm glad to have the information.
