Only 18% return in one month, woe is me!  But I know what you mean, it's easy to get hooked on 50-100% per month ROI.  Bitcoin risks are a lot lower now than they were last year, with oodles of good news and publicity so far this year, so it does make sense that returns are now lower than they used to be.

I figure if I can make 5-10% per month, it's worth my time and risk to keep playing in this market, independent of philosophical reasons to be involved in bitcoin economy.  The buy and hold strategy may no longer be the best strategy, though. A 5-10% uptick or downtick could happen at basically anytime, and countering these big market moves is still more profitable than most other investments.