I fully agree with the need to test new code to claim it's secure enough.
Bitcoin proved itself vulnerable to centralization and monopolization, which was against its original principles. Hence it can no longer be said that Bitcoin is 'money by the people', it can be said it's 'money by the corporations'. Just look at the skyrocketing difficulty, 25% each 10 days. Little fish don't have a chance.
Litecoin is going the same route, just lagging behind. But since people start to realize the flaws of the PoW design, they begin mass exodus out of Litecoin, well, not there yet, mass exodus will begin when it dips below 0.01. They still have a hope for Bitcoin, because it's been around longer, but the design is the same, the flaws are the same, it's just delaying the inevitable and wishful thinking.
Anything is vulnerable to centralization and monopolization. Hardly something to use as a reason it can't survive.
"Little fish don't have a chance". <-- This statement goes back to the example:
If all of the world's money supply was evenly divided amongst each living human being it wouldn't be long before many of those with fair shares of the money supply would lose it due to bad decision making or horrible risk management.Claiming that as an argument is like saying "boo hoo the world isn't fair so now let me go and cry about it because I was late to the game or fucked up along the way."
The world doesn't work like that. Hardly an argument for why Bitcoin will fail.