I'm planning on at the end of this year (unless I get a job offer I'm hoping for...). One big thing that is greatly greasing the wheels here in Canada is the Canada Child Benefit. For kids under the age of 18, it's a progressive monthly payment to help pay for expenses related to children, designed to help prevent children from living in poverty, and to simplify the overly complex mess of tax credits and various allowances that existed prior.
For a fairly typical Mustachian-style family of 4 with FIRE spending of around $35-40k, it can result in up to over $10k tax-free income, which according to the tracking I've been doing for the past few years, is pretty much exactly what we've been spending on our kids, factoring in all aspects - school costs, sports and activities, RESP savings, allowances, family outings and vacations, groceries, etc.
As my kids head into the teenage years, I'm a bit concerned about increasing expenses in those years (cell phones, more expensive activities and groceries), but hopefully that won't be too much.
