Yes @makesmesad1977 I've had a near identical experience.
It's always the brothers isn't it?
I would love to know the psychology behind why adult children often do this to ageing parents who they've had a decent relationship with..
I think there are a number of possible reasons
one is that death of a parent ( and the lead up to it) often acts as a microscope on family relatinonships. In grief people can focus on stuff that shifts how they feel. A good relationship may in grief be made into a perfect one. An average relationship into a bad one. A bad relationship into a catastrophic one.
people bring their own baggage with them. A sibling who did nothing to help or care if it was needed prior to death may feel guilty so justify their own actions by lying to themselves that the parent was a bad parent and they had a bad realationsip.
siblings may not always know how the other feels about the parent. you may think there was a decent relationship but they may not - and that feeling may be total rubbish (need to lie to themselves) or it may be fair.
grief makes everyone go a bit insane.
men (stereotype but true) don't deal very well with intense emotional stuff (as parental death and lead up is) and many find it easier to run away.
men who are married tend to always prioritise their wife, children, in-laws and new family at all costs over parents and birth family. So minor and trivial needs of the marriage family trump major crises and important serious needs of their parents or birth family. women tend not do to this and stay close if there was a good relationship.