My son loves nursery, I've been back at work since he was a year, and once he was settled, he has always run in smiling, loves his key workers and the the other children, and sometimes is having so much fun, he doesn't want to come home.
When DD is born he will still be attending 3 days a week as it is part of his routine and he enjoys it. He'll also be there when I go back to work, so I think it'd be cruel to take him out for a year and then put him in.
So, call me 'lazy' if you want, but it has nothing to do with not wanting to look after a 2 year old and a newborn, and everything to do with keeping him happy and settled.
How incredibly judgemental of you. Watch those judgey pants don't cut off your air supply.
OP, sorry for the hijack. I also advocate putting your toddler in before baby arrives so that they're settled in a routine - I'm dropping my sons days to 3 per week, and having him visit the next stage up a month early so that he is settled in the new area and routine before his little sister arrives.