I trained as a teacher when i was a single parent and there was no way I could have managed the training or the actual job without the endless support of my parents. When on placement I was out of the house at 7am and not back until 6pm - and regularly fell asleep on the living-room carpet half an hour after getting DD into bed.
The holidays are great - but don't forget you will have a ton of catch-up marking, preparing and paperwork to do, plus there is no flexibility - so no school plays, special assemblies, sports day, medical appointments, and God help you if they are sick.
Plus your entry salary may be the only one you ever get - pay increases are entirely discretionary now, and controlled by the headteacher, who is in charge of the pay budget plus he sets his own salary with no limits out of that budget. And even if you get a decent headteacher, you can't take that salary with you if you move schools.
I wouldn't tell anyone to get into teaching anymore unless they were absolutely certain they had a vocation for it, because that is the only thing that will keep you going. Huge numbers of teachers are desperate to get out, or have already got out - that's why we have the youngest teaching workforce in the developed world. Have you been into a school and got a feel for it?