I was you, still am actually, but my DH has had a life changing illness, which he can now blame. But we both know the problem was there beforehand. also like you, trouble cumming but can get it up okay. Blames tiredness, but is fit and has time and energy for a lot of other things.
Like your DH, he is a great father to our ds, provide, companion, friend. He knows me, my quirks and anxieties and knows just how to make me happy in every way. But like you, sexually, it is pretty dead.
I have blamed myself, dressed up, dressed down, considered he may be gay, convinced myself he could be having affairs... Cried, considered having sexual affairs, shouted, scream, sulky, been reasonable, been unreasonable... Everything. Until very recently I thought the only way was divorce.
But I love him, his company and our life. Our ds is happy and stable.
I recently just told him I felt wretched abd frustrated, and I could try and cope with the no sex, but couldn't cope with the no intimacy. He needed to try. He needed to acknowledge that this isn't normal and I was suffering. Just to show me that he at least thought about it sometimes. I was calm, just sad.
Since then, he has tried... It has been better. But not anywhere near what I would consider normal or satisfactory. For now it is enough that he is openly acknowledging my frustration. But I still remain wanting.