It's not my intention to be nasty and I'm sorry you took it that way. The situation is not specific to you either - many, many women are in this position. The men in their lives just don't care enough about them to make them a priority. I disagree that this is acceptable.
Largely, I think, it is because many men are socialised this way. They get away with having a set of priorities which looks very different from women's priorities. Generally speaking, women are socialised to think that if you love and appreciate someone, you should show it through kind, thoughtful and appropriate gestures. These take time and effort and are part of the 'mental load' which is mostly borne by women. By putting this time and effort in, women are reducing their leisure time in order to make family/couple life more enjoyable.
So women often have a hierarchy of priorities that goes something like this:
ESSENTIAL CHILDREN'S STUFF/CHILDCARE (things like caring for children, covering sick days, organising childcare, school pick-ups, essential food provision and packed lunches, clothes, uniform, school stuff etc.)
WORK (often women can only prioritise work after they've sorted out the childcare/essential children stuff).
HOUSEHOLD CHORES/NON-ESSENTIAL CHILDREN'S STUFF (tidying, cooking nutritious meals, homework, reading to children, spending time with children, facilitating children's activities).
NON-ESSENTIAL FAMILY/PARTNER STUFF (days out, doing nice things for partner, presents, organising nights out/meals etc.)
SLEEP
LEISURE (if there's any time left at this point, which there often isn't).
Often for women, LEISURE is confused with NON-ESSENTIAL CHILDREN'S STUFF. So women get told that doing play doh with their children or taking them to the playground is the same as having leisure time for themselves. This mistake is not made for men.
An unacceptable number of men with children have the following hierarchy of priorities:
WORK
SLEEP
LEISURE
CHILDCARE/HOUSEHOLD CHORES/ESSENTIAL CHILDREN'S STUFF (under protest, often the 'Disney Dad' stuff and only when there isn't someone else to palm this stuff off onto).
Non-essential family and partner stuff isn't generally on their radar. On the rare occasions they have to do any of it (their OH's birthday/Christmas, for example), it's done badly in a half-arsed fashion without considerable thought because it's taking time out from sleep and leisure, which are more important.