One must look at the film industry like a business, particularly in the auditioning process: the production is asking for an 'orange'. And you come along and you're an 'apple'. You may be a perfectly good 'apple', but the fact remains they are still looking for that 'orange'. Don't take it personally, or give up. Keep going. Because one day soon, a production will need an 'apple', and you will be the best 'apple' they will ever find. And that's called the 'big break'.