YABU to be angered.
the aim of the interest rate drop is to:
help the housing market
Help businesses borrow money so they don't have to make more people redundant
Help prevent people losing their houses as quickly.
Encourage people to spend so that more businesses go bust.
Savers have had a few good years of great interest rates (unpresidented I believe - we had an account at 12%)
You are lucky to be a position to have extra to save. Many people work hard (if they haven't lost their jobs as many people I know of have), spend little and have nothing left to save. If you had lost your job and your home then anger would be justified.
Be angry at those that have spent what they didn't have, at the bankers, the governments and the people that allowed us to get into this position. All understandable.
But being angry because you aren't makng quite as much on your savings as you were last year is a bit much.