Our DD is 13 months and goes to nursery 3 days a week. She's sociable sort but it's been bumpy for everyone.
The biggest pro for me is interaction with other children, particularly the kids who are a handful of months older. She's a bit young yet for this to be crucial to her development (and 1:1 interaction with adults at this stage actually IS important), but we've definitely noticed her beginning to interact with other children positively. Things like handing toys back and forth, negotiating arguments over toys, and 'talking' to the other kids. She's also come on leaps and bounds with speech development and gross motor skills since she started. Probably a bit of coincidence in there, but I think it must help to watch the older kids.
Though it seems nuts, I also like exposing her to a few bugs before she gets to school/pre-school when it really does matter that she attends as often as possible.
The cons for nursery are fairly obvious: exorbitant cost, nursery closures, sickness rate is pretty alarming, lack of dedicated 1:1 attention, though she has bonded strongly to a staff member there, which I'm really grateful for, but has caused some operational issues for the staff.
On the whole, though, our nursery is pretty good I think. They're communicative, their app is helpful, and I feel that she's generally safe while there. She eats well and sleeps well there too, which is a sign things are fine for now. Ultimately I just didn't trust the options for childminders in our area. We actually started her at one, which was the kind of set up with more kids and lots of assistants, but it was a disaster. She's registered at a Montessori pre-school already so we might move her there when the time comes, or stick with the nursery pre-school.
I was just saying to DP this morning that my ideal childcare scenario would be a small group of 3-4 nannies doing 1:1 care for children together. Same nannies and kids in the same home setting for a few afternoons per week, while each nanny does a baby class or whatever with their charge in the mornings. Expensive, fantasy-land bliss! I wonder if rich folk do facilitate setups like this?! 😂