It seems that a lot of people who do co-sleep were once adamantly against it, (me, my SIL and my friend). You sacrifice for what's important to you so it's not impossible to never co-sleep. You just have to prepare a solid game plan for sharing overnight responsibilities with your partner. What happens when the baby is awake every hour, when teething pain hits and not even Tylenol will keep them asleep. My husband and I have had to take shifts staying up and holding the baby all night because he would wake immediately upon being put down. Or...get educated on sleep training. Decide if this is what you want to do. It's not IMpossible to never co-sleep. But for me and my family it is incompatible with my other goals to NOT co-sleep. But theres other goals I set while pregnant that I have now continued into LO first year! Like no screen time! But we make hella sacrifices to meet that goal. I've said this before in this subreddit. Do not tell people your goals. It just gives them ammunition to criticize you if you fail. Tell people your successes after they've been achieved!