S.H.
Each Mom "stops" or continues it as they feel to.
But for us, me and Hubby, we are on the same page about it all... so co-sleeping was never a thing where we had to "stop" or "continue" as a point of contention between us as a couple.
I have co-slept with both my kids since birth... and now, they have their own beds which they sleep in too. But, we also have a floor futon in our room... whereby the kids can sleep if they want, in our room. A sort of variation of co-sleeping. But prior, they were in our bed, or on the floor futon in which I slept with them, when they were younger. Thus, now at their present ages... they are not IN "our" bed per say... but in the same room, if they need be. It works out well for us.
And for naps, my kids sleep in their own beds. But at night... this is when they either sleep on the floor futon in our room, or in their own room. We really don't mind and its a nice thing when the kids are in our room... like camping out. One day they will not even want to be near their parents. For now, it provides closeness and bonding and comforting for them. Both my kids are VERY independent kids and very self-confident and secure. I think it provides the kids with a nice sort of "being."
We got our kids their own room/beds when we felt THEY were ready for it. Each child being different. It was at about 2.5 years old. But we let them know that they are not a prisoner of their rooms, but it is THEIR room/bed & special. At certain age junctures, a child also goes through night-time 'fears' and what not, and us "allowing" them to come into our room (on the floor futon) if they want... has REALLY made the transition to THEIR own room/beds, more accepted. We did not make their rooms/their own bed be like a place to be "separate" or "alone."
For my son, he more often sleeps "with us" on the floor futon in our room... he being younger. We don't mind. I will lie with him reading and talking story (which is a good routine for us) and he falls asleep. Then I just get up and do what I want and go back to my/Hubby's bed. So, my son is used to sleeping "by himself" on the floor futon. I do NOT have to STAY there with him. Now. He is used to that. Or he sleeps by himself in his room, or with his sister. It really does not matter to us... the MAIN THING being that the kids sleep. And sleep well. Which they do.
So, we are "flexible" about it all and sleeping.
I remember as a child... sleeping with my parents too. They NEVER minded. I would fall asleep in my own room... and in the middle of the night would creep down the hallway in the dark and crawl into bed with my parents. I did so because I simply missed them and/or was afraid of sleeping in the dark in my room, alone. Gradually, me or any kid, grows out of it and the "need" to sleep with their parents.
Some nights, my kids just say they want to be by themselves and sleep in their own bed. Fine. Some nights they want to be with us in our room on the floor futon. Fine.
NO BIGGIE for them, or us.
There are many "variations" of co-sleeping.... AND it will gradually transition itself to more "separate" ways of sleeping.
We NEVER FORCED the situation with our kids, that they sleep ALL night by themselves in their room/beds, nor punished them if they did not or did. We believe, that sleep should be a good nice thing to do... without struggle or conflict or angst or fighting. Thus, our kids sleep very well and totally cooperate when we say "bedtime soon..." and they go willingly. They feel secure and safe and "happy" in doing so. We never made it a "negative" experience for them.
And yes, we as Parents get a good sleep. Even through the normal sleep wakings as is normal per the development of a child.
All the best,
Susan