When I started my own firm in 2005 I adopted a no-overtime policy in reaction to that. This was more feasible since I was creating and delivering software and this was more predictable and containable than doing VFX itself. This has loosened a bit as the company grew, we got funding, then got other divisions, etc.
I couldn't take the hours, honestly. The place I worked I was ended up sleeping under the desk and doing 20hr days to make crunches.
I think all of this is also completely unnecessary. Work-life balance is necessary if you want to have a family and enjoy it - that means you need weekends off, and you need standard business hours. Otherwise, it messes up daycare, evening children events and the split of chores between you and your significant other (which will lead to fights.)