Roger that on all of dat!!! I'm a freak about all my lights working. For those very reasons above. I check them off the reflection in the vehicles in front and behind me, garage wall. I actually walked around it with the lights and 4 ways on last Friday night at 2am before I drive home from a bar. I'm a veteran of that shit. Don't forget about the little license plate bulbs either.
That bulb is 4 months old. That bulb was out when I bought it in April and replaced it. Filament was broke. Like I said, the contact was really low as in I could see it was sitting too deep in the slot, plus a little corroded, so I cleaned it really good with an eraser. I only bent it about 1-2mm. I carry spare new bulbs in all my vehicles, so I'm not being a cheap skate.
I will keep a close eye on it though. Thanks for the tips and concern.