Because there could be a coin split and people are worried about that.
A few different factions don't agree on what is a proper update and what isn't. Greed comes into play on all sides and it is worrisome.
I agree. There are many people who would rather want bitcoin to remain as a whole and to be the 'main' cryptocurrency. The fear comes around that bitcoin might be split in 1/2 if a hard fork goes wrong (I think).
One question:
At 31 of July, I have 1 bitcoin in my wallet.
At 1st of August, there is a hard fork. Ok, I have my bitcoin in my wallet, but, where is my bitcoin in the new blockchain? Where I can see and move the new bitcoin to a "new bitcoin" wallet?
Thanks!
The best way to solve this in my opinion is to transfer your funds to a hardware wallet that allows only you to access the private key. This way, if a split does occur in the blockchain, you will have both parts of this split in your 'hands'.
I predict that the price will take another substantial hit right before August 1 before rapidly climbing again after Segwit2x's implementation.