How long Angel Eye bulbs must last ?

[motex]

I'm still surprised that my angel eye bulbs burned in just 17 months, I use the daylight driving lights feature all the time, but still feel's like they burned too early, those bulbs in my opinion must last years of use, not 17 months ..... the scan the car and there is nothing wrong, the left one burned 5 weeks before the right one !

I would like to hear if any of you had the same experience ?

Thanks,
Bernie