Hi there. Well, I don't put rose colored glasses on it and say everything always works out. Sometimes it doesn't and kids suffer for it. Poverty is very hard for children to grow up in and it is a vicious, repeating cycle.
I would talk about your future and what you can do as a team to get yourself in a better position. Are you both educated? Both have good jobs? That's what you both need and you support one another to do it. If he hasn't been to college or trade school, talk about exploring his options. Grants often pay for this and you may have to sacrifice him being around much or very available if he pursues that while working but in the end, you'll have a much better future. And you too need to look at what you can do to be a provider for your family so that the two of you can be in a better financial position.
I'm a fan of having those things in place BEFORE pregnancy but it doesn't always happen that way. it sounds like your boyfriend is realistic about what is to come with the hardship of a young couple struggling to make ends meet. So, talk to him about plans to make it better. That's all you can do. And if he feels less anxious because of that, he'll become more interested in the pregnancy.
But whitewashing it and saying all will be fine usually doesn't help (and isn't always true). good luck
We are all on the same boat! I guess husbands don't get very excited until the day your baby is born
Everything always works out the way is supposed to. . Embrace and love him. We all struggle.