My mam had 8 wanes of her own.
Then my eldest bro had a child at 16 - mam ended up practically rearing her too.
My sister got married - mam had her dd as well as the previously mentioned GD (this is whilst myself & younger sister were 4 & 6)
She minded them for 2 years until another grandson came along.... she minded him then too.
Get the picture? All in all she minded about 9 of her 18 grandchildren. Unfortunately she lives too far away from me to be of any practical help on a daily basis, but if she did? I know fine well there's be no stopping her from having our 2!
As it stands, I have a c/minder 4 afternoons a week, DH finishes early on a Friday so picks the wanes up himself.
My ILS are fab - though MIL is in her 50s and still works full time, she is more than happy to have our two the odd Saturday night so we can go to the pub theatre
They have had them to stay lots & had them a weekned when me & DH went to Dublin to see Take That.... they're brill I love my MIL to wee bits & I know she is genuinely mad about the wee ones.
I think it's nice for GPs to help out, however I do agree that a line has to be drawn somewhere.
My sister's ILs are fab - they have her dd every day after school, all 3 of her children on a Saturday & overnight most Friday nights. The granny insists on it & would huff if my sis said they weren't going down!! The granny has 5 grandkids & they are all there every weekend - she says it stops her being bored! (she has even phoned me up & offered to have my two when I was having c/care difficulties.... how fab is she?)