Running Core means that you will be left behind if a 75% majority is reached.
Lol, define "behind".
What will happen to the exchange rate of Bitcoin XT if it becomes a surveillance based, non-fungible nightmare? Say hello to your new benevolent dictator, XT fans...
why should that happen?
it's just Bitcoin Core but with ability to have larger blocks, a bug fix, and two minor things that are useful for app developers.
The reason is because Mike Hearn will become the new lead developer. He has expressed his desire to censor transactions before, and he didn't change his mind about that belief. He simply accepted that the majority disagreed with him.
Now, Mike is proposing XT that has the appearance of looking after user's interests. But it needs that same majority (the majority he couldn't get before) to agree and roll out his version of the client.
It's basically a way for Mike to stage a coup d'etats on the leadership of Bitcoin. You will get bigger blocks and higher tx rates. You will also get any other changes that he decides on in future. I don't trust him to give him that level of control over my money.
Mike will not be the new leader. There should be no leader at all. and it is not only Mikes work, gavin and jeff support that idea too.
you have the same choice with every software update - use it or now.
in my view this update is good and valuable. so i support it. i want bitcoin to scale, to be the worldwide free and open transactions system without a centralised service like blockstream.
8MB blocks are no problem.
maybe this will help us all but i would not bet on it:
https://bitcointalk.org/index.php?topic=1154033.0