This one's easy. Because you value your people more than the parties they can throw. The cost/benefit are not just monetary. If they were, the event would have

This one's easy. Because you value your people more than the parties they can throw. The cost/benefit are not just monetary. If they were, the event would have no reason to happen under any circumstance. You fire someone because they are hurting the company? That feels like a company that cares about doing well. Event seems more okay, and there's no reason to question the financial cost if the org seems to be doing well. You layoff someone off because you're tight on cash? Tell everyone you only hire top performers but had to let a top performer go because of budgetary reasons? Feels gross to throw more money away when you're already making "hard" decisions about letting quality people go.