Theory
I think because many people are buying now BTC due to "free money" the schedule to be at November ( BTC GOLD ) I believe that its price should go down because many people also transfer there funds from altcoin to bitcoin
And it good time to buy altcoin ( maybe wait even a bit longer )
What do you think?
That might be the case why people are buying it before the fork. Bitcoin is a great investment let's not forget it. Regardless of the fork people would still buy it.
What you are saying is right but i think bitcoin price will go down so when they get the bitcoin gold and wanted to sell the bitcoins they are holding to high price but the price will go down on the other side. Even other altcoin price will also go up so everyone who sold the altcoins will regret as the price will go up until they sell the bitcoin gold and buy back their altcoins. So it is much better to not sell the altcoins and instead if you have bitcoins buy more altcoins with it.