Thanks but

I.

In holy matrimony, they hold hands
Because

They are in love, they are to raise children together,

They are to be envied by all their single friends,

They are to feel the safety and comfort of having someone to come home to.

We march, rally, and protest the law

We use media, literature, art to spread our plight

Because 
We too want to hold hands,

To rear love, children, envy, safety, comfort,

As reassurance that they and we are now equal,

That we are so quickly progressing towards societal acceptance,

Thanks

But

Slow down, step back, a mathematical logic problem, an oft-overlooked given,

Did they make the right assumption?

In holy matrimony.

II.

Selfish is my freedom,

Take from their investment

In marriage and commitment.

Wallow in childhood comfort

Created for me

But not from me

To unborn children.

Selfish but great is my freedom

Laugh all the way to the grave

With cradle cake still in mouth.

Care and wisdom handed down

Cumulative receiver am I

Walk with each step,

A gem in my belly.

But they, a man and a woman, 

Trudge through remaining days,

Taken of their investment

In marriage and commitment

Sallow in stagnant stability

Created for society

But not for them

Walk with each step,

A stone in their belly.