I am a little amazed at how fast it goes, but can you image trying to bounce up and down like that for more than 2 minutes?
If you lived across a 100 foot waterway from your work, it would be great. Other than that, I can't think of a single reason to buy it. (With the possible exception of having 5 swedish swimsuit models living in the lake house next door that loved bouncing up and down on stupid contraptions).