We are @ 15% of NW for ours.
Looking back at the 6 years here, our expenses for insurance and prop tax is ~$9k this year, so $750/mo. We can't rent a home in our neighborhood for under $3000. Maintenance is minimal for us. We've added a few things, but nothing major. The appreciation is around 30-40%, so it offsets anything we've had to deal with. Initial cost was $330k including the remodel and updating the mechanicals. Now worth ~$450-500k.
We did buy a fixer (original owner never updated, but did a great job of maintaining it). We also live a street away from the kiddos.
50% is high for me personally. No income tax (& others) is a great motivation. I'd definitely consider ongoing costs like utilities for Florida. We're in DFW & after 3 years of electricity rates <.10/kwh, we're looking at a 40% increase in rates next month. We have a small home, but it could be a huge bill for the 4-5000 sf homes they're building here. Insurance just jumped 28% for 2 years straight too. Smaller home = smaller expenses.