Do you think is it still worth to invest on hardware just to mine coins with it?
With governments/politicians spending money like drunken sailors which keeps weakening current currencies, BTC is a unique solution to that problem with a cap to how much currency can exist.
I think of it as a investment for the future. It may not pay off for us, but will, possibly, for our posterity.
My 0.02 BTC worth,
Sam