The fact he already has a dating profile up tells me he doesn't care. And it shows me his views on divorce, so not sure what you can do at this point. I personally don't believe in divorce, but thats just me.
As for the money and kids issue. Well as stated money is a massive problem for couples. Its a terrible reason to leave someone over. Single or not life will not be easy when it comes to having money. Unless you got the perfect job making the perfect amount of money. Even then things will come up and you will have financial issues. Now I also wouldn't leave someone over not wanting kids. My feeling (and its usually not accepted by many) is that you marry someone with the intent on wanting to be with them. If you marry with a bigger intent of having kids then it may leave that person feeling like they were a means to an end. Not that I know if thats how you felt of course, I don't know you.
From seeing couples it seems like both can, for lack of better words be selfish about the subject of kids. The wife tends to feel the husband is selfish about not wanting them, like shes being robbed out of them. And the husband tends to feel the wife is being selfish because hes being robbed of other things. But wanting kids seems to cause many issues with couples. In todays world it is true you have to have stable finances to have one. You can't just have a child and hope for the best. As I say God is not a genie. He expects us to think about what we want to do. And really I believe if God wants kids to happen, they will happen no matter how much "protection" someone uses. A condom is not going to stop God from blessing you with kids if He had them planned. But again, thats just me. I personally want to have a little girl. But currently our situation is sort of like your in terms of my wife can only find part time work making minimum wage and I am on SSI and unable to work. So for now I feel we aren't ready yet. I am always praying soon though things change.
You did mention you don't want to be the provider. Is there a reason why? Is it related to Christianity and that then man usually is the "bread winner"? I only ask because in todays world people that have kids have to both work just to afford them. Some even work two or three jobs. Of course I am not saying you should provide it all. But finding a job is not easy. At least around here trying to find a job is hard. Its usually far away or pays next to nothing. Even myself I've tried looking and those jobs I could even attempt to try and far away and I have no way to get there.
I'd also say we have to remember that we may have goals in our own head. And sometimes we leave others because we don't see the future we want working out. But we have to remember that God is in control. His plans are not ours. We can have hopes and dreams and pray for God to provide them of course. But in the end He knows our future and what He would like to see us do. For me? I never planned to marry someone outside of a certain area. But my wife is literally from the other side of the planet. Just like those stories of couples who had this list of things they wanted in a spouse. But by Gods will they met some person who was nothing like what they wanted on their list. And they fell in love, married them...etc. Now they see God knew better.
Whether or not your husband will come back to you is up to him of course. Its his free will. But I'd pray God softens his heart so you two can make things right. If all goes well this will strengthen your marriage since its a trial you went through. Although I will say the moment someone mentions divorce, then its already in their mind and its going to grow like a weed unless they get rid of the weed.
BTW are you divorced yet? Because if you are not yet and he has a profile then biblicaly hes cheating on you. Talking to other women, doing who knows what in chats. Hes still accountable to God while you two are legally married. Again you can't make him not talk to other women, but he will have to answer for that when he is before God. Pray for him no matter what happens. And pray for guidance for yourself. Nothing is impossible.