[loupgarou21]

I know personal experience doesn't exactly count as rigorous scientific study, but I do have one light in my house that I literally never turn off in my kitchen. No automatic switch or anything, it burns 24/7/365.

It burns out roughly every 3 years (26,000 hours, pretty damned good, right.) That bulb is subject to various other environmental factors that will reduce it's lifespan (vibration and high heat.)

I've forgotten my point now, but I think it boils down to, a single factor, such as power cycling, isn't likely going to be the only reason a bulb doesn't last as long. A lot of factors play into it, including both environment and manufacturing.

[adventured]

Can definitely confirm this effect. Had a regular bulb in a standing lamp that was pointing upward toward a corner of my home office, that I never turned off. It lasted five years of being on 24/7. The other bulbs used in it (the lamp has three light inserts) have also lasted incredibly long durations (typically 2 to 3 years).