No more

After many talks with my husband, we will not be having more children. 
This is horrible for me. 
He wants to live our lives. He said he will go get a vasectomy. 
I am nearing the end of having children. I wanted one more. He doesn't want to do it again. I know I should understand, not push it anymore & love him for who he is. But the obsession is non stop. I am utterly absolutely heartbroken. 
I have tried every angle I can think of. Offered what ever he would ever want. 
Nothing. 
Please tell me I am not all alone. I have even thought about all sorts of things cray to get his sperm. 
No suggestions?
I'm sure everyone will just agree I should let it go. I feel one more in my heart & soul. But unless I get back on BC he is going to get snipped.