If we add conservative justices then we will likely reverse Roe v Wade and send it back to the states. Also, there won't be any same sex marriage imposed by judges.
Beyond values, conservative justices will issue better decisions on states' rights, national security and business issues.
We know where McCain stands on life, Roe v Wade and same sex marriage:
"John McCain believes Roe v. Wade is a flawed decision that must be overturned......
The family represents the foundation of Western Civilization and civil society and John McCain believes the institution of marriage is a union between one man and one woman...
As President, John McCain will nominate judges who understand that their role is to faithfully apply the law as written, not impose their opinions through judicial fiat."
In simple terms, voters decide issues like abortion, same sex marriage and other concerns about values.
Judges interpret the law not make it! That's going to be the biggest consequence of this election.