Marriage provides automatic benefits to couples that can not be replicated by any legal contract. Love is not restricted to people of opposite sexes nor should marriage be. If you would like to know why gay marriage makes sense – read some arguments in this marriage equality article.
Gay and lesbian couples were immediately be able to marry in California due to decisive action by the 9th Circuit U.S. Court of Appeals to lift the stay on same-sex marriages on June 28, 2013. Though this had a direct effect on California only, it lays the path for it to become law throughout the U.S. The fight is not over.
In Indiana, it has been made a felony for a same-sex couple to apply for a marriage license.