I would consider how much you love your job and how much you want to return to it in the future. It's all very well saying, as DancerGirl says, I'll retrain, I'll go back but if you were trying to go back in the current climate, it would be almost impossible. There are loads of posts on MN about how hard it is to return to work after many years out, even my husband (who took two years out to look after my second) found it hard to get back in, although he has done so eventually.
That's why many women do jobs which are poorly paid or don't use their qualifications. They are made to feel like they are the only ones responsible for childcare (so have to do the school run) and that their job is not important compared with their husband's career.
If you want to stay home, it's worth it to have that time with your child, but only if you are prepared for what it will inevitably do to your career and potentially your relationship (with a man that doesn't seem keen to help you in your career).
Many of my friends in this situation have worked part-time to 'hold' their place in the workplace if you like, and absolutely loved the fact that once the children are at school, they can pick up their career again. I have worked full-time since my dd2 was seven months, and although at the time I had grave misgivings due to wanting to be her carer (my husband did it), I am now incredibly grateful I held my place and can now focus on work.
As for your DH, I don't see a supportive equal husband here, I'm afraid. I don't see someone sitting down and saying 'well, how are we going to share this out?' or 'are we going to take it in turns to focus on our careers?' Yours is now lesser already, and the baby is only 8 months! Very worrying. I would want to challenge this thinking head-on.