Because God seeks worshippers to worship Him
Yet a time is coming and has now come when the true worshippers will worship the Father in spirit and truth, for they are the kind of worshippers the Father seeks. God is spirit, and his worshippers must worship in spirit and in truth
Because it is Biblical and God is restoring Biblical worship to His church
Does it mean you have to dance, clap, shout, raise your hand etc. The answer is NO! However we are not ridicule or scorn those in The King's Fellowship who do actively seek to worship according to scripture. Yet, you are free to do all of these things as you express your love to to God through living, vibrant, active worship.