YABVU
OP you haven't got a clue what being a real single parent is like. One thing that really irritates me is women in your position ie lots of time managing the kids alone, thinking they have it as tough as single parents, and now you are claiming it might easier. Yes logistics come into it but that's a two way street, even assuming the other parent is around.
Single parents worry about babysitters ALWAYS. Worry about how to cope with EVERYTHING in the household, house, garden car, council, school, kids being difficult, teens bigger than you being abusive, no sharing a secret smile when the kids are playing up.
I could go on but I'm sure you are getting the picture.
In your position, there is someone to talk to about the kids, someone who can share some responsibility, someone to run things past, never mind the emotional support, even if just on the end of a phone/mail.
The worst thing? When your DC does something wonderful, or even just cute and there is no one to share it with. Now balance that against one evening and a having every other weekend 'free'.