Your solution works to a point, but it will not be as robust as SQLite. Its ACID powers are incredibly valuable in the real world where things fail or are unreliable. Also the ability to do complicated queries comes in handy sooner than you would think.
Of course you have to then mess around with SQL but you only have to write it once and encapsulate it somewhere and you're done.
Of course you have to then mess around with SQL but you only have to write it once and encapsulate it somewhere and you're done.