Does this make me "ungrateful"?

I have two beautiful baby girls. I'm a young mom. My S/O are trying to work things out for our girls, after being broken up for months, because he was emotionally abusive and has been to counselling since. We're talking about finding a new place together because I currently moved back in with my mother who was sick, but she's since been getting a bit better. I said I did not want an apartment. I have two amazing jobs that pay me VERY well. I said I would rather rent a house. I don't want to cramp my girls into an apartment, and we've previously lived in one with our first daughter and we've had problems with neighbours being too loud and smoking near her, I don't want to go through it again. Before we were considering getting back together, I was already looking into houses. The houses for rent in my area are on the cheaper side, only slightly more than an apartment, and like I said, I make very good money and would have been able to afford it on my own, + the utilities and everything else. I wasn't worried about him. He told me I'm being "ungrateful for wanting a house". I want my babies to grow up with a backyard and their own rooms. And if I can afford it, and I'm not asking him to move back in with me/be with me, I don't see how it makes me ungrateful.... This was just my plan. Sorry for the rant. Do any of you guys rent? And do you think this makes sense?