I was in your shoes 3 years ago. The pay was good but the boss was s***. No time to get married, no time to have kids. You have to decide when enough is enough and walk away from all this. I have no regrets quitting my job although I did tell my hubby that perhaps in the future if I hear my boss is gone, I might decide to go back there to work. Being a sahm means loss of income from one source. But if you and hubby work out your finances and feel that it's ok then that's fine.
How old is your child? If he or she is of the age where going to a few hours of playgroup is possible, why not take up private tuition assignments since I supposed you are a MOE trained teacher. More flexibility , though you'll have to overcome the paycut and some adjustments in your lifestyle...
Well i m in the same position as you.If finance is not an issue then why not be a SAHM .