Because the alternatives are not all that attractive.
Sunni Muslim= Terrorist (I've had enough virgins in my lifetime. If magbinootan daw ta tagaan pa ta ug 72.)
Shia Muslim= Terrorist
Iglesia ni Kristo= Cult
PBMA= Ecleo
Born Again = sourgrapes
Ang Dating Daan= no further comment needed
Catholic nalang ko kay dunay fiesta, kami maoy dominante, and I find the ceremonies during baptisms, confirmations, and weddings appealing.