The (legally) rich have got their money through being intelligent, or clever, or taking educated risks, or working hard, (or their families have). They already pay more through income tax - why should they pay even more just because they have more money? The Beatles and the Rolling Stones were charged something like 98% tax in total. What the hell?
Ditto someone who might not have bought the big house, or run the big car, or taken the expensive holidays, but put all their money into their pension? Why should they now pay more tax for being prudent?
Obviously we should help the poor, but everyone else should pay their fair share, not just the rich.