Ofcourse it seems easier to falsify things as you say. For example - Am I to believe in bigfoot, ufo's, ghosts, the green giant?
I'd like to add to the responses to this.
It's hard to falsify a belief in UFO's. In this case, in fact, impossible, because UFO's just mean unidentified flying objects, and there have been plenty of flying objects that are unidentified.
On the other hand, a worldwide flood is a lot easier to falsify. No one has been able to produce a worldwide flood model that gives accurate predictions. A worldwide flood, especially one 4,000 years ago, would produce noticeable results, such as the destruction of civilizations older than 4,000 years, like Egypt or China. Egyptian and Chinese history has no record of such a flood.
Other flood models do predict things. Some creationists propose a flood that layed all or most of the layers of the geologic column and sorted the fossils by size. The fossils are not sorted by size, and the layers of the geologic column are not layed as a worldwide flood would lay them. Others propose a flood with the fossils sorted by the speed and climbing ability of the fossilized animals. Fossils are also not sorted this way, so both models cannot be true.
Coming up with a flood model that explains how all humans were killed off except Noah and his family, while the Chinese and Egyptian nations just went on without noticing it seems pretty impossible to me, so I can feel comfortable when I say it didn't happen.
The flood makes a much better example than UFO's or bigfoot.