Don't want Kids

Hi. I am a Single Male.

I want to get married.

But I don't want kids for xyz reason.

Is this going to be a problem in marriage?

Let's say my partner says she is fine with that,

Is this going to affect our sex life?

Aside from using a condom and getting a vasectomy, what are the other options?

My question is more directed to DINK couples.

What do you do?

Or is it better not to get married?