Well, the Rocket certainly can be used for commuting. The reasons it's
not the ideal choice should be pretty self-evident:
* fuel consumption (if that's is a trivial matter at your income level, you either make a lot more money than I do, or else have become accustomed to feeding a bigass SUV; 90-some percent of other bikes out there are better in this regard, not just the tiny ones)
* weight (especially if you have to deal with angle parking on a street with significant crown to it)
* the ride quality on poor paving (unless you've made all the high-dollar mods already; in which case, see the bigass SUV remark above

)
* proportional to its size, less storage capacity than a lot of other bikes for the work-related stuff you may have to carry, or groceries picked up on the way home
* awfully high repair costs if some dip**** backs into it in the parking lot with his bigass SUV
* awfully high emotional cost if... (see above)
The plus side is that it can definitely make going to work seem less of a chore. When it comes to practicality for commuting, though, there are other bikes that fit the bill better. But it's OK for the occasional commuting you seem interested in, and certainly for around-town stuff on a nice day.