@Mor - I think the problem is still space. We have extremely fast computers now, but they still can't rival the human brain for storage and capabilities. I know it seems impressive when you see a computer calculate some astronomical equation, but the human brain does so much more every second. It's controlling multiple aspects of your biology, including every minute movement you make and your heart and your hormones and so forth, as well as storing everything that you know and everything that you can do (and this includes muscle memory and things you probably aren't even aware of knowing).
Even teaching a computer how to move an artificial arm in a way that won't crush a glass takes a huge amount of power, let alone all the other things your brain can do without even trying.
That's why we have computer cognition that works in parts, with a single problem solved, but the whole aspect still out of reach for now.