Karen, we stopped adopting
1. When our bedrooms were full to overflowing
2. When the county asked us to be emergency foster parents, and we said yes
(the two events happened together)
We may have adopted more later had my ex not been living two lives and decided the one he was living with us was not what he wanted. Lest you get the wrong impression, some of the adoptions were even more his decision than mine! But they were always mutual in the long run.
Menageriekeeper, you are comparing apples and oranges here. We ask God for what we want, knowing that His wisdom is far greater than ours and then trusting Him with the result. That is not the case when birth control is used. What that is doing is not only refusing to allow God His way, but, in effect, telling Him what you don't want and are doing your best to refuse, regardless of His wisdom on the issue.
Johnv, you are not even making sense. A couple who has relations without trying to prevent children is leaving it in the Lord's hands. That is a lot different from doing everything you can to take the control out of His hands.
As far as a non-biologic children being less yours, that is a rather silly thing to be asking me, don't you think???