Hi sara,
if you're asymptomatic - that is, you aren't having acute or chronic gall pain - then you're fine. Once you start having either chronic gall pain or acute attacks, you'll want to figure out how to have the surgery done as soon as possible.
The medical facts are that even a single acute attack can be life-threatening. You could have a stone travel out of the gall bladder and lodge itself in a duct. When this happens, the surgery is necessary immediately and more complicated. Chronic inflammation can lead to infection. Either way, the best treatment option if you're healthy enough to survive surgery is to have the organ removed. Once it acts up, it won't get better on its own. Life will be extremely unpleasant and there will be no end in sight.
If you have acute attacks, they will increase in frequency. If you have chronic pain, then your search to find a diet that doesn't trigger it will eventually reduce you to eating the blandest diet (vegetables, yogurt, fruit, repeat thrice daily) imaginable - and it may eventually still not matter.
There's a lot of "controversy" stirred up among people who proffer natural solutions, but very little controversy in the realm of medical science. The "gall bladder" flushes have been demonstrated to be nonsense. The vast majority of people who have a cholecystectomy have no digestive trouble following the surgery. Regarding the woman who said it isn't a simple procedure - you can actually find an outline of the procedure on the internet and it's about 20 steps from initial cut to final suturing! It's also the first operation that surgical students learn to perform, owing to its relative ease of execution. After my diagnosis, I talked to several doctors from different fields and different parts of the world, including a man who'd built a long and distinguished career on the diseases of the upper gi tract, and the concensus view was, "the risks to health and happiness of keeping a diseased gall bladder far outweigh the risks of having it removed."
(anecdotally, no one I know of directly or indirectly had any digestive trouble following their removal - that's five or six people, not including me, who were improved with no ill effects.)