I should add that for us, a nursery was the best choice as I didn't like the idea of a childminder with her hands full leaving my daughter to cry. We chose a small private nursery and there were always plenty of staff on hand (7 in fact) so one of them could always give her a cuddle or rock her to sleep or hold her (literally for the first two months, she slept on someone's chest as they rocked in the rocking chair for naps as she wouldn't sleep on her own there without getting upset). A childminder never could have done that as she would have had other children to look after and would have just left her to cry.
I have been a childminder for 18 years and I have never left a child to cry. And, funnily enough, the children I have cared for from the age of 6 months to 11 years are happy, sociable, articulate and emotionally sound. I have had babies who wouldn't sleep anywhere but on my shoulder for years, never mind a couple of months, and it's never been a problem. If you have never used a childminder then you really should stop spouting such rubbish.
I have 40 years experience working with children. I have worked in nurseries (private and council), pre schools, primary school, workplace nursery, private nannying, hospitals and, for the past 18 years at my home.
The majority of children will thrive whichever setting they are in. The majority of children do not need to socialise under the age of 3. I have never had a child who comes to want me more than their parent regardless of how many hours they spend in childcare.
If your childcare provider is loving, nurturing, communicative, and provides a reasonable amount of stimuli then your child will do just fine.
In the past 18 years I have cared for upwards of 60 children in my home. Some for as long as 11 years and I am happy to report that they are all fabulous teenagers who are reaching, and in many cases, exceeding their potential.