Well, to quote a crew scheduler, "You're a reserve, we can do anything we want to you!"
In all fairness, he is a good guy and I have worked with him a lot. We were both laughing and he didn't mean it in a mean-spirited way.
But, it's true.
What do you think the outcome would be if I was to refuse a trip starting in ONT or BUR, for no other reason than "It's not my base."? Flowers, maybe?