Well, if there’s commitment, do you need “a commitment”? What is the advantage of having the permission of the church or the state? Insurance and taxes.
Additionally, how can anyone promise forever? Sounds like a threat as much as it is a promise.
There are pragmatic benefits to an officially recognized marriage (it allows Mrs. TC and me to live in the same country, for one), and having your union recognized by your community can be precious to some people–particularly those who have long been excluded.
But if those things aren’t important to you, don’t let anyone tell you they should be.
Tabula Candida 
Well, if there’s commitment, do you need “a commitment”? What is the advantage of having the permission of the church or the state? Insurance and taxes.
Additionally, how can anyone promise forever? Sounds like a threat as much as it is a promise.
There are pragmatic benefits to an officially recognized marriage (it allows Mrs. TC and me to live in the same country, for one), and having your union recognized by your community can be precious to some people–particularly those who have long been excluded.
But if those things aren’t important to you, don’t let anyone tell you they should be.