I want divorce, husband doesn't

I have been unsatisfied with our marriage for a long time. My husband thinks we can keep on "working" on our marriage.
I just no longer care to have sex with him. He has low patience and gets overwhelmed easily. We argue a lot. 
Its hard to be the one who makes the decision that we should divorce when he wants to keep trying. I think it is easier to stay in a unsatisfying relationship than it is to divorce. I feel like oh yeah maybe I should keep trying since I married him etc. It sounds secure to just stay since we are good financially together. Its hard dating and being single, starting over. 
Anyone else be the one who made the decision to divorce? 

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