WHY INSECTS PUT OFF FIRE?!

I am living in the jungle somewhere near N 6° 4'46.07" E117°20'59.36" . Far from civilization. I usually read book at night before I sleep. I never bothered by the insects jumping into fire before.

Last night was different. It was so dark and quite outside the mess, after I lit a candle an army of jungle creatures from the class of Insecta, subclass of Pterygota relentlessly attacking my candle. Among the order attacking were Hymenoptera, Coleoptera, Homoptera, Orthoptera, and finally Lepidoptera which knock off my candle and I resign from reading.

Why these insect jump into fire?

Mantis of Orthoptera staring at me.

Hymenoptera fell in improvised can candle stand.