What is marriage? Why do we need it anyway?

The ultimate common sense definition and explanation:

Sex is for marriage; marriage is for sex.

Essentially, in its most successful model, and for it to play the most positive, purposeful role in society as a whole, marriage is a certification, registration, and proclamation that

1. A man & a woman intend on having sex

2. The man intends on doing everything he can to take care of, protect, respect, value, love the woman;

3. The man and woman certify & register for a potential family, and commit to learning all they can and doing their very best to raise that family in a nurturing environment.

4. The woman commits to taking a comforting, nurturing, life-giving role in the family, while relying on the security and provision of the man

Marriage essentially guarantees clean and secure environments and practices within the home. For example: it is next to impossible for two lovingly married heterosexual virgins, who have lived otherwise responsible lives, to engage in marriage-related activities such as oral & vaginal sex, & have such activity result in a crisis pregnancy, physical or emotional damage, or Venereal Disease such as HIV/ AIDS. Marriage is the ultimate and only guaranteed "Protection" and the only “Safe Sex” (Planned Parenthood can no longer call teenage sex “safe sex”, because they know it isn't safe, and now opt for the term “safer sex”.)

The new word for real, true marriage (i.e. as aforementioned) - as the definition of marriage evolves within Western society during the 21st century - is "Unification". This is made to contrast the gradual shift of marriage being solely for heterosexuals, to being solely for homosexuals, and eventually becoming inclusive to bisexuals, polygamists, swingers, buggers, prostitutes, pedophiles, and incestuous relationships.

Civil unions are simply registrations for cohabitation or intimate interaction of any two or more persons, with the expectations of possible sexual or otherwise intimate activity; as contrasted with real marriage. Interdependent partners should all have the same legal rights (opposite-sex couples, same-sex couples, or interdependent relationships such as a person caring for an elderly parent), as should all human beings.