Yeah I wait it too.
But I think if 100$/BTC the price is only getting down, not getting higher

yes, very few people will have interest to invest in bitcoin anymore, I don't think the bitcoin users can handle another crash. So many people who bought at 1000$ will be heartbroken to see their investment value at 10 percent now. I think if hits so low, there will be no point investing in it, I would definitely get out of the bitcoin world if such a situation takes place.
Has many investors who have invested their savings in bitcoins in 1000 and 600 dollars, its mostly just waiting for your recovery to get out, I don't believe that if you reach 100 bitcoins dollars the desvalorizaçao do any of these investors out, on the contrary will buy more bitcoins and will leverage a good return.
I don't think so that would be the scenario. You believe that a lot of people will invest in btc once it is only 10$ but you are disregarding the fact that if there is a time if bitcoin does hit 100$, it will prove that bitcoin will be too volatile and not reliable at all as a currency. Also, people will start losing faith much more rapidly than they usually do. Thankfully, according to the current calculations, bitcoin is expected to not hit anything below 200$ again.