$1500 month * 12 months = $18000/year on rent.
That's 7.2% of $250k annually. Do you think your investments could reliably return more than that per year given the ups and downs of the market? If not then it is probably worth it to buy.
Of course you will also have property taxes, maintenance, etc. on a purchase. But most likely the house will continue to appreciate. And rents would continue to go up, likely at a faster rate than your taxes.