This is based on my own experience and also friends and family.
I was a single parent to dd now 5, for 3 years. Logistically they were a breeze compared with negotiating diaries with DP, organising plans with another adult too etc
I had to work full time and I was constantly on the go. Everything was organised, I thought ahead, I was on a roll. I then stopped work for around a year and honestly I struggled so much with motivation! I thought I would be more efficient at home but I was less. My patience with DD lessened as I wasn’t one to one with her as much.
I see it with my sister too. She is a SAHM, no money issues, huge help from my parents, nursery and in laws. Yet she doesn’t cope well. Everything is in disarray, nothing is kept on top of.
I think sometimes the eaiser life is on the face of it, the harder it can be to manage, especially where kids are concerned! I know there’s obviously a tipping point and everyone needs and deserves a break…but do you think there’s something in this theory? Often being busier gets you through in my experience, because you have no choice to opt out