Jai Sri Ganesha,
The offering of worship varies from man to man, Deity of the worship may vary but core essence remains the same that self or the image of self in perceptive truth,
Indeed truth and faith of the man create the difference with the potency of truth man bear with,
Purpose of the worship may differ from person to person yet core essence of this truth revolves around the want of self,
Devotees worship on the pitch of barter system and few devotees worship disinterestedly to gratify self in truth with self,
May Lord bless all,
Thanks please