Why not try for the job Mickyc as you just might get it and there is no harm in trying - if you don't get it then you can tell yourself you tried and the interview will be just practise for the real job that you will go for and get ....as you only need one job to move on.
I have being doing this job for 13 years and I still love it , but we are human so we have off days now and then and today is a rainy day in BC so I will allow myself to have an off day today.
writing down the pros and cons sounds like a great idea 5lm for anyone to double check on if it is time to move on to an job outside of home and I praise everyone for being honest with themselves in this job - as it is a hard job when you don't like it anymore