Fanatics. It takes all kinds...
fa·nat·ic
fəˈnatik
noun
1.
a person filled with excessive and single-minded zeal, especially for an extreme religious or political cause.
synonyms: zealot, extremist, militant, dogmatist, devotee, adherent; More
informal
a person with an obsessive interest in and enthusiasm for something, especially an activity.
"a fitness fanatic"
adjective
adjective: fanatic
1.
filled with or expressing excessive zeal.
"his fanatic energy"
fa·nat·ic
fəˈnatik
noun
1.
a person filled with excessive and single-minded zeal, especially for an extreme religious or political cause.
synonyms: zealot, extremist, militant, dogmatist, devotee, adherent; More
informal
a person with an obsessive interest in and enthusiasm for something, especially an activity.
"a fitness fanatic"
adjective
adjective: fanatic
1.
filled with or expressing excessive zeal.
"his fanatic energy"