A man and a woman can decide that whats best for them is that he not take leave, but for the benefit other people he should take parental leave.
Even if he enjoys working, even if the mother has decided she wants to stay home, even if they need opportunity that work brings (such as the opportunity to get promotions). Even if there are a hundred reasons for a man to not want to take leave, even if taking leave is worse for him, his partner and child, he must take leave so that other people who he may never meet have an advantage.
Yes, encouraging a few weeks off work is good for the family, but forcing someone to take 7 months off of work is massively disruptive. Not even to speak of the disruption on small businesses, that may not be able to accommodate a person leaving for that period of time. If you run a business of 10 people, a single person is 10% of your workforce, and just due to the size you may not have staff to cover the missing expertise.
Forced long-term paternity leave is a system, that explicitly harms the outcomes of one group (working fathers) to provide benefits to others (working mothers, and non-working people in general).
