Yes unexpected maintenance can sometimes be a huge problem, especially in the first couple of years, but after that you can tap into home equity and repair say a roof. Everything else while expensive is still cheaper than renting. Using the OP's example 1k vs 500, I can assure you you will never have consistent 500 repairs per month.
As for the taxes the people in my city nearly went ballistic when the city increased the rate by 5%. At the end of the year it costed me $200. Per month that's about $16. I've never lived in any apartment anywhere where rent didn't increase by at least $50 per month each year. Even if someone had a home twice as valuable that's still a very small monthly cost.
Additional once you get past the first 3ish years rent prices have greatly outpaced your mortgage and you will be saving a lot of money compared to of you were renting.
I'd like to wrap up with a question. If owning a home was such a sink of resources why do people become landlords?