God is Love - means God loves all to enjoy life and to have fun as well. However to have fun needs to be in balance with the work and daily duties you have accomplished. First work and duties, then the fun part of life. To suppress your fun part of life means to reject your right of being happy. To have a life only based on fun means you are selfish and neglect the duty to be useful and helpful toward all creation.
… read all about how to have fun in life - part 1