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?
Yes Bitcoin price will go down someday in the future. Part of it's characteristic is being volatile which makes it also kinda risky. This is the same and as risky as forex trading.
One of the factors that may let Bitcoin drop its price is your explanation, altcoins. However, there are also a lot of possibilities that can also bring down the price of Bitcoin and one of which is when people will panic selling Bitcoins on a market or financial crash. This happens also in stocks and other investments and that someday may also happen in Bitcoin.