Opinions?

So me and my hubby have two kids together and I have just found out that I'm expecting. Was a big shock as I fell pregnant on birth control but once the shock wore off I was really excited. When I told my husband he said that I'll have to get rid of it because we can't afford it. We splits rent and bills 50/50 but I pay for all the food and toiletries and all the kids stuff. Nappies, clothes, shoes, school stuff. His wages are double mine but he chooses to spend all his money on himself, new clothes, games ect. So if he paid his half of things we'd be quite comfortable money wise. I can't help but feel I'd be better off living on my own with the kids... Any advice?