It's not that it's "easy" to get funding compared with, say, getting a cheeseburger. But it's far from impossible. And I think that I could do it.
That being said, it might be impossible. And not relying on it would be a safer position. The point is, if it's easy enough to avoid, why not just save up the money, and then do it?
I certainly don't mind sharing creative control with fellow creators. In fact, it's absolutely necessary, and almost always a profitable move. Two people are more than twice as productive as one, by a significant measure.
YC doesn't take a huge cut, and the folks behind it are smart enough to know that the best investments do the best when they're mostly left alone.
Growth figures into my plans, but less than other factors. The way I see it, I'm in this for the love of creating things, and the paycheck is so that rent and feeding don't get in the way. At Yahoo, I have less say in what happens, and it's frustrating to see the wrong decisions get made. Being able to say "I told you so" rings hollow after a while. (To be fair, Yahoo is a lot less awful than a lot of other companies, and overall, a great place to work. I highly recommend it.)
In any transaction, it makes sense to put yourself in the best position possible. Selling 5% of a 10 million dollar company is better than selling 10% of a 5 million dollar company; same $$, half the price.