While safety is paramount, I'd be concerned about the sizable depreciation of property value with steel bars on the windows. And it also seems to advertise you've got something worth protecting. In an old neighborhood my neighbor was the only one in a few square miles that had these bars. They were an eyesore. Her front door was also the same as everyone elses, common steel, screws and deadbolt. So the bars were a waste of money. After she lost her home in foreclosure for non-payment, the new owners promptly removed the ugly bars.
A strong adult man can kick down any civilian front door in a matter of a few hard kicks or a sledge hammer. It's just screws and bolts into a thin steel and/or wood frame.
Anyone with a truck and a tow strap can yank those bars off in an instant. Thousands of dollars wasted in security theater.
Lights, cameras, a loud dog, and a trained person with a gun, and locking up valuables in a real safe are the best security unless you want to live in a hardened concrete bunker.
