Finance and home purchase?

If a buyer qualifies for FHA and lives in Orange County CA. Housing price $450K and home would conservatively rent for about $2250. Is it better to purchase or to rent? I am looking for an exit strategy should some unforseen event occur where I cant pay. The exit strategy would be to move out and rent the place out. I could rent a room or move back to my parents. Any thoughts or words of wisdom.