Hmmm...
Fire is the element of strength and passion. It can easily be the most destructive element as well. It can heat up and scorch/burn things and people if used in that way. It also has many practical uses, like clearing a path, heating up food/meat and keeping yourself warm. I personally like it for these reasons.
Some Fire users are Kakashi, Jiraiya and Kakuzu. Konoha is well known as the village who use the most Fire techniques, as the Uchiha and the Sarutobi have both shown proficiency in said jutsu. Fire is also strong against Wind, but weak against Water. Blaze and Boil release are both KGs that have stemmed from Fire as well.