Spouse and I just started TTC, after having one child several years ago. Before my DC was conceived, I wanted twins because that seemed like an efficient way of getting two kids without having to be pregnant more

But now, I still get really excited about the idea of twins. Whenever I think about having more kids, in my imagination it's twins. I have never dreamed of a large family or thought twins were mystical or anything like that.
Is this common? Weird? FWIW I have no family history of twins and am not using medical assistance to conceive, so my chances of twins are not great.