<human>: Can you provide a brief rundown of the text in within 3 sentences?

We just got married last month. Have been seeing each other for about 7 years before that. He has been on Propecia for 2.5 years. When he first went on Propecia, we read extensively on Propecia (he's a scientist, I'm a doctor) and the side effects. Till today, he has still refused to acknowledge that Propecia is teratogenic (no evidence, etc), although it is classified as under the FDA as pregnancy category X. 
Before he went on it 2.5 years ago, I told him categorically that I want him to stop Propecia for at least 3 months before we try for a baby. He didn't agree or disagree. I guess I was dumb to not have discuss this further. And stupid to assume that logically he would do so. 
So, we have a conversation yesterday about starting a family yesterday, and I told him again that I want him to go off Propecia for at least 3 months before trying. And he drops the bomb saying 'I guess we won't be having kids then'. He basically said that he won't come off Propecia, 'because my hair will drop off in a few weeks'.
He then said there was no evidence that it was teratogenic. And he was unwilling to risk losing his hair, if it means some peace of mind for a healthy baby (I know, there can be other things which could result in an otherwise unhealthy child, but at least something which we could have controlled).
His question was: what if you knew there was a good chance you would lose your hair if you had kids- would you still do it? I said yes, I would take the chance. Besides there is a 100% chance that I will put on weight, have bigger hips etc.
He is vain, he cares about his hair. His brother, who is 2 year older, is losing most of his hair. His hair was thinning before he went on it, but not something people would notice.
I know I was dumb to assume and not have the proper conversation before marriage. How do we move on from here?
<bot>: Husband refuses to go off Propecia before trying for baby, even though it is teratogenic, and I have made clear before marriage that I want him to be off it before we try for kids.