Exactly. I think that baptism, communion, endowment, sealings, etc should be understood as initiation rites into a community. In the Book of Mormon, particularly at the waters of Mormon, baptism is quite clearly portrayed as such, communion literally means "participation in something; that which is common to all; union in religious worship, doctrine, or discipline" (I have no idea how it came to be called "the sacrament" in Mormonism), and the temple endowment was literally modeled after initiation rites for the preeminent social club of the early 19th century. Somewhere along the way, though, these sacraments lost their role as communal initiation and became magical means to secure a spot in heaven.