If you are suggesting a mega-thread, please summarize that thread first and include it in your suggestion post.
My point is that this has been discussed many times already. I have said my piece, it's not worth a try.
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You just have to understand the money and resources involved pulling it off and what incentives the bad actors doing a 51% attack, it's not worth a try.
It's not worth it for now, but what if it happens in the future where bitcoin cant be mined anymore or when the bitcoin block reward is already too small and makes the bitcoin network difficulty becomes so low?
You talking about 2140? Again, why not look at the current circulating supply? We are closer to that 'almost all bitcoin have been mined", specially in the next 3 halvings: 2024 , 2028 , 2032. 1.5625 Bitcoin for Block ->225 Bitcoin every day. So it will be really costly to try and pull this 51% attack.