I am a big fan of family planning.
This does not mean, however, that I believe all babies must be loved and planned, or worse, must be planned to be loved and wanted. It's how I hope to do things, if biology doesn't intervene. But I know of at least two families who are actively avoiding planning, and they clearly love and want their children and are doing a beautiful job with them. I am not prepared to condemn this approach out of hand.
Also, wanting your children is a thing I advocate in general, most hours of most days. But if you want to sell your loved, wanted children to any passing Mongol horde some days, this does not make you a bad parent, and it does not make them less loved and wanted.
(Some of you should check with me before contacting the Mongols, however.)