Alright, since you're not giving up, here's the rebuttal, in shorthand:
1) 51% attack against Bitcoin is infeasible, both by prohibitively high cost for any but the largest entities, lack of economic incentive (cost of attack > profit resulting from attack, because market value would drop as an effect of the attack), and the near-impossibility to secure and put online, in complete secrecy, the specialized hardware (regardless of the USD cost of the hardware). Don't care about PoW vs. PoS in alts.
2) PoS is inferior to PoW in three key regards: New coin distribution according to work is vastly preferred over distribution according to stake. Can't argue with human nature. Consensus forming in the case of competing chains is trivial for PoW, and bordering on impossible for PoS. The economic backing of PoW in the form of energy exerted provides a useful base valuation, because it provides the network with a well-grounded "bootstrap" value.
Questions?
Where's your rebuttal? I don't see anything disputing the fact that PoS is much more expensive to attack against. You just keep saying Bitcoin is expensive to attack, that's your opinion, I don't believe $500m is expensive for a well funded and determined attacker, such as nation government or big banks.
Regarding your PoS is inferior 3 points:
1. PoW is a valid distribution method if you can't figure out a fair distribution with PoS, for example Peercoin started with PoW distribution and now majority of Peercoin blocks produced by PoS, how does this make PoS inferior if PoW is temporary(for distribution phase only) and PoS is the permanent solution?
2. Consensus, I don't see how it is "impossible" for PoS to form consensus, all the PoS altcoins can form consensus just fine, and does it better than any PoW altcoin that are easily 51% attacked, there goes your "trivial PoW consensus" argument.
3. PoW cost is NOT a value or backing, since you can't trade back and forth with it. It's an ongoing EXPENSE, it does not provide any "bootstrap" value, it sucks value out of the eco-system, and enriches the hardware vendors/electric companies. The reality has shown that PoS eco-system can have large amount of value without the need of a PoW mining network.