Read what I said. I never said you need to live like Ghandi to object to excessive wealth. I said you need to live like Ghandi to object to excessive wealth on the moral grounds that that wealth could be used to save the lives of those who die due to poverty, WHEN, you yourself have excessive wealth by the standards of those dying. A very different arguement to the one you seem to have plucked fromt he sky.
We can get into the arguement of degees of immortality if you like, but it does not change the fact that a both individuals (super rich and realtively super rich) have the ability to save lives with no significant impact on themselves. As both choose not to do so, they are both are immoral. Its rather hard to build a moral argument when on the same issue you are wading through your own immorality on the same issue. Unless you don't have a problem with hypocracy? But hey, its always easier for the person with more money then yourself to pick up the tab. Seems to be a trend in this Country are moment. If each indicidual did what they can to help those around them, rather than building shaky moral arguments that others should pick up the bill - while conveniently shielding themsleves from finacial loss - the world would be a better place.
EDIT: I assume you won't be cutting your own expenditure SIGNIFICANTLY and donating money to the poor? I guess not, it's easier to rally against the rich and their immortality then focus too much on the implications of your lack of action, how financially convenient.
EDIT: Before you get your knickers in a twist, nobody means actually living like Ghandi, it's a metaphor for living life simply.