Well I'm not saying they are totally worthless, but the risk is huge if this bug is still there.

My strategy would be to look for a reserve currency where I can store my wealth in. Looks like my strategy is flawed, I should just diversify until such currency arises.

Bitcoin would have been the one (I had 80% of my money in it), but I don't trust Bitcoin now:
https://steemit.com/bitcoin/@profitgenerator/uasf-bitcoin-is-finished