Well, it's early days for me, since my DD is not quite 7 months old, but I find I miss having regular social contact with adults! I don't miss the "work" aspect of my job, and would be happy to spend all (or at least most of) my time looking after Tamsin, but I do just miss having conversations with people. I am planning to go back to work part time in a month, and DH will be going part time too so we can share the care of Tamsin - so it's not really a financial decision, we just both want to have that time with her.