I'll just type out the scenario and leave it to the vote, I'm a relative to someone in the family and I'm kind of stuck in the middle of it all. Just looking for an outsiders perspective.
So the man has 2 daughters from his first marriage. He re marries a divorcee who has a 2 year old son. His girls are around 8 years old at this point. They all have a happy upbringing, the man is close to his girls and also treats his step son as his own. His 2nd wife does the same with her step daughters.
Fast forward to today. The daughters are both happily married to very wealthy men, want for nothing. The son is also happily married, not as wealthy but has a mortgage on his own home, is in a good job, enjoys holidays abroad etc.
The man has sadly died and left nothing in his will to his daughters. It's all been left to his 2nd wife and son.
Yanbu- that's wrong, he should have left something to the daughters even though they are now very wealthy
Yabu-the daughters don't need the money, he was right to leave everything to his 2nd wife and her son as their need is greater.