We were due to go on a group retreat (less than 10 families altogether) but couldn't in the end as DH had flu which developed into pneumonia.
None of the people who I was helping organise it have been in touch to ask how DH is. AIBU to regard this as hurtful? They've been back a week today.
YABU...people are busy, get over yourself
YANBU ..a little message saying "sorry you couldn't come how is DH" is just common courtesy.