I'm also known as the Clicky lens killer here... :nana:
I have a dustophobia or dirtophobia. While I always treated my photographic equipment nice and with special cloth and cleaning liquids, the lenses rarely got dirty as I used covers and didn't stick the cameras in my pockets (try that with an SLR!!!).
My flashights however are carried in my pocket and besides that some are jewels, they should be considered as tools. While I know I shouldn't clean the lenses with my pullover and knowing also that dust isn't hat dramatic for the output, my phobia makes me wipe the dust off all the time and if I don't pay attention, I touch the lens with my fingers in the pocket which means rubbing until the grease is gone... :shakehead
I'm used to have scratches instead of tools, on my SLRs I cleaned the mirrors, on my Mags I cleaned the reflectors. Yeah, that's bad, and it's worse because I would do it again when I see dust on them.
Flashlights should have a A coating on the inside and a sort of diaamond coating or another specialtreatment to make surfaces smooth, so that dirt gets off easily. I should only buy such lights or at least let the other ones in the showcase. But they are tools, also those with double AR coating, especially the Ra Clicky!
If you are not ill : Use special cleaning cloth like microfiber which is made for optics, perhaps some special liquid or alcohol if there's much dirt and don't clean more often than necessary! :thumbsup: