We both do not have children of our own now. My reasons to not wanting kids may be different than yours but the pressure is there for you since you are married.
We can write big list to why it is not a good idea to have children but here's the thing. Our lists, where did we get it from? It is through observations in the real world but that also is our bias. How do we know our kids will be brats if we never had kids in the first place?
Having children may definitely change a person unless you are like a kaydoo on the Maury show where kaydoo Don't care about his 10 kids by ten different baby Mamas. To some, they are building a Mimi me version of themselves as to the fails in their life, they wanted their children to accomplish it. It sounds like a lot but we can safely say that we will never know unless we are there.
I just hope people know what they are getting themselves into and will not let remorse or regret gets to them at the later golden ages.
I'm a good believing person and if a healthy normal person is able to have children like God's gift to men and I would say no thanks to God, I just can not see myself doing that.
I just worry more about the psychological consequences that comes with not having children by choice. I know that making the decision when being single is easier but when you are coupled up, it just gets harder.
If you want to test your husband, asked him if it is ok for you to get a vasectomy and see what he'll say. I'm concerning about him as well.
You see, in life, if you are not a mother or a father then what are you? You are then still a child and being a child needs more learning and training.