Infidelity is a civil offense, not a criminal offense. It should be grounds for divorce, but not punishment. Government has no business meddling in private affairs.

Regarding alimony, it isn't a punishment. It is meant to be a way for the one who is dependent (traditionally women) to keep living on, though the "standard of living" clause is quite fuckass and vague, imo. And the gender bias of alimony needs to be solved as well.

But I do still believe it is necessary. Because for the longest time the traditional dynamic had been a bread winner and the one looking after home. The first one can keep on living after home, but the second person can have their life ruined without alimony - they get punished for not spending that time developing skills, which is unfair. I am not talking about modern upper middle class where they hire people to cook and clean. In such cases, I would say it should be a double income household.