Boobysmum, I think being mean to the orginal poster by calling her "needy" was a bit unneccesary. Without turning this into a debate about full time nursery care, there will be people who disagree with your statement that all children cope perfectly well in full time nursery care, you cannot expect everyone to have the same opinions and if someone has a different view to you, it doesn't make it less valid. I have worked in a school nursery (so not in the same setting as you of course) where most children adapt well but not every child, so I think sweeping statements about "all children" over simplify the matter.
Also, most other countries have school starting ages of 6, so surely it is a valid concern, whether you personally agree with it or not. Plus, having spent time working in recpetion class it was a lot more than "sand and water play mixed in with a few Jolly Phonics". Different schools vary of course but some reception classes are actually quite formal, there is of course play but there can also be a resonable about of directed structured learning, which some people disagree is appropiate for the age group. I am sure you will disagree with this, by the tone of your orginal post, but you need to acknowledge that some people are unhappy with structured learning at this age and they are entitled to this opinion, whether you agree or not.
I also think attending nursery can be a completely different experience than sending a child to a large infant school of over 300 pupils, which can be overwelming for some children, whilst others will cope perfectly fine. Also the staff-child ratio is a lot lower in school than nursery, which can make a big difference.
I think what I am trying to say is all parents, children and schools are different and Highlander needs to make a decision that is right for her and her family. What decision she comes to is her own business but knowing the facts so she can make the right decision for her is crucial, bullying will not help with this.