Since I've already earned the contempt of so many JJ'ers for my attitude towards work, let me be the one dissenting voice — you got what you deserved!
Put yourself in your boss' place. He's probably hanging on by his fingernails in this terrible economy. The company is everything to him. When you came to his company looking for a job he took a huge chance and gave you a job. Were you happy to get the job? Did you take pride in telling your friends that you had been hired as a professional pilot? Were you stoked to have those paychecks coming in to pay your bills? I'm sure you were.
Now, the company is in trouble. Everyone has to suck it up and pull together to keep the company going. The boss asks you to help them out and work a day or two for free, and you pull an attitude on him. "Oh no, you can help me when I need help and I need a job, but I'm not going to help you." That's what your boss hears. A spoiled kid with an attitude who has no clue about how tough it is to run a business. (Or how tough life can be.)
It's called give and take. It's the difference between succeeding in life or being one of the losers who can't figure out why they're always unemployed or doing some junk job. They really don't get it! They can't figure it out! And these are the people who think their time is so valuable--the losers!
Bosses hate selfish employees! They watch their employees like hawks. Who picks up that piece of trash on company property? Who walks past it? Who picks up a broom to sweep up even though it's not their job. The boss is watching all that. That's how he got to be the boss, by working harder than everyone else.
If you're grateful for you job, act like it.
There were days when I flew for free for our air tour company, like when the airline pilot who wanted to work for us (and who was bragging about his 40,000 hours) wrecked one of our planes. Or when the weather wiped out our best season. When the company needs you, you step up, or step aside.
But, hey. If your time is so valuable you can certainly start your own company. Go ahead. Try it.
On a calmer note, look on your firing as a learning experience and an opportunity to move on and do something else. Five years from now you may look back on it as the best thing that ever happened to you.
Good luck.