Why $200?

Honest question, why do so many think that it will go to $200 anytime soon? I see so many posts about this. I'm bullish but only in for right at around 100 shares with an $28 average. Trying to my DD but I want to understand the reason for this price point better as I don't want to make a mistake and miss out on potential gains or take a huge hit to my Roth.