A seasoned dev will just say "The cost of changing the the text file to the database will only keep growing with our system. The sooner we use the database the

A seasoned dev will just say "The cost of changing the the text file to the database will only keep growing with our system. The sooner we use the database the better". If necessary, he'll back it up with an anecdote, and his expertise, and you won't have a counter to that.