marriage crisis

I am not sure what to do anymore and it's been like this even before pregnancy, my husband has a really bad video game addiction. it causes him to stay up till 4am or even 6am at times and then he sleeps till 12pm or 1pm. But what really pissed me off is when I'm working he makes his cousin or friend watch our children mostly and he says he baby sits our children. I feel nothing but anger around him. and even when I ask certain questions he yells at me. i just don't know what to do anymore. I'm scared to bring up divorce cause i really don't know how he will handle it cause to him everything is alright.