My daughter and family moved back to the UK from NZ. When she mentioned she'd like to return and how hard she was finding balancing family life with a career, I encouraged her to move by the promise of support.
When my DiL wanted to train as a TA I also promised her this support. I now have a full schedule of childminding, overnighters, school runs.
It's hard but I wouldn't miss this stage of their lives for anything.
In September the 3 & 4 year old will start school full time leaving me with only one GD during the day, but with additions school runs and after school care.
Yes, I get tired, but I also think all the running around, lifting, chasing, planning, etc helps keep me fit and mentally active. (I am only 67)
Am I taken for granted? Perhaps sometimes in their busy lives they do taken it as a norm, but then they are brought up short when their friends say 'you don't know how lucky you are' or when, as happened last week, the oldest child was sick at school and had to be fetched are cared for.
And do I appreciate my weekends? You bet I do