I already have a 2 year old DD and my DH have decided after we come back from our holiday in a month we’ll decide if we want another DC. We both think if we don’t do it then we won’t ever do it because the age gap will be too big, we’ll be getting older and a general if we are going to do it we might as well do it then.
I’m an only child and if DH’s siblings have children it won’t be for a while so they’ll be quite far apart age wise and probably won’t see a lot of them so no cousins.