He didn’t love his first two wives and kids?
He did and he took very good care of them.
It is not for us to judge what went on in these marriages.
One clue is provided in the marriage to Ivana. He had lost his entire fortune in the S&L Crisis so much so that he was worth less than zero to the tune of hundreds of millions. It is reasonable to assume this had a disabling effect on his marriage.
In any event, all of his children love and respect him, and his ex-wives are at peace with him. He took care of them all.