i think that its up to a person to make theor own decision whether to take the wheel off or not. I made the decision to take it off because the orginal wheel that was on my car was in poor condition (looked like someone had an aftermarket wheel on it and before and then put it back on).
I replaced it with an aftermarket one and am only about 55% happy, reasons being, ontop of purchase of wheel, you need a boss kit (about $100, and it goes up to $300ish if you get the one with the hicas unit). Also, since i got the non hicas one, not only does does the air bag light remain on (bloody annoying, especially at night) but the hicas light comes on at high speeds.
I would suggest that unless you REALLY hate your wheel, keep it on.