Even in your example - which is an extreme one [and proving that abuse would be tough] - paying alimony after early retirement age of 62 would be nuts (or 17 years in this example, I still don’t see more than half the # of years you are married as worst case scenario of reasonable, which is 13.5). You’ll get half the assets at divorce, plus a good chunk of his income in his most likely normal years, plus can work to make money yourself now. Lifetime alimony is nuts, especially if there were significant assets to split, and you’ll already be eligible for half his SS.
It is not extreme. Men who marry a young lady and build a life, family, children and career with her - and then leave her for a younger model once they are well established - is a common trope for a reason.
Obviously it is not all the time but it is common.
Anyway, I am not arguing for automatic lifetime alimony! I just think sometimes it is warranted and should not be banned.
As for abuse, true physical abuse is NOT hard to prove. It’s not as common as trading in your older model who dedicated her life to you for a trophy wife, however.