I havnt got a problem with the age as long as the baby is wanted and loved.
I do have an issue when consequences arn't considered. (Eg health or family support ) I married into a family where number 1 was 28 and number 2 was 25 when number 3 arrived.
my mil is knackered and totally does not understand teenagers in her 60's! She expects us to do the teen talks and discipline line, which as you can imagine gets laughed at! If she is naughty she is sent to us, as 'tween' is only a year or 2 older than our eldest.
I feel very sad for 'tween' as she has spent her life around adults, her parents friends are all the same age and older, and she has a very lonely time of it, school should be a blessing, but she struggles and so it isnt a great experience. sometimes i think younger siblings would of been a perfect solution in this case, rather than the huge gap there is, but then i realise it wouldnt just be one child packed off to me, it would be 2 or 3! they did try for more.
Here the pecking order is my children first and she craves attention, so can be quite spiteful, so our relationship is strained. I did put my foot down and this summer refused to have her for weeks on end, (I dont work, mil does) which caused issues!