Its not that it is rejected. Though it is clear there is mass speculation which tends to inflate prices past its core use. Which lead to the wild swings as news and conditions vary. Such as the recent SegWit agreement which already has detractors. If this deal does not go through at the agreed date, expect it to take a swing down as speculators dump ship to buy at a better price.
Also keep in mind, the pioneers often blaze the path for younger and more fit innovators to bring it to the next level. In our age of rapid change, it is no guarantee BitCoin will have its dominance in a few years. Although if you keep your investments in the game with the rising stars, diversified, this industry is just getting started. Best of sucess and good news.