Recently, I had 2 light bulbs burn out. These were the CFL bulbs. I didn't think much about it until I purchased a new pack and saw on the pack the life expectancy is 11 years.
Last week another bulb burnt out and I happened to see that I wrote on the bulb that it was installed in April of 2013!
I am thinking the average life span is 1.1 years not 11!
At least I get to fill up the landfill with mercury now.
Always thinking about something....