Confused...

So three days ago my husband said ok to adoption. Then two days ago he said he doesn't want to adopt right now. Then last night I probed at him a little bit to find out why he said that. Apparently he wants to wait until we have all our ducks in a row, or as close to a row as possible, which is understandable. But why couldn't he just say that in the first place instead of just saying yes then no and flip flopping?