The only point I agree is that there should be no faith or worse blind faith, but the rest is just complete speculation on your part. Yes it can be valued at $200 but it can also find support at $800 or whatever with the halving coming. Perhaps in 2018 Bitcoin is no more. If you feel this is a good time to sell, I won't really argue with that because to me it's not a good time to buy, so you may be right on that.

Personally, I would never sell even at $1000 because it won't change my life, Bitcoin price keeps increasing every year since it started, it may fail eventually, but so far it's a great annual investment if you happened to bought at a decent price (I bought at $230 which it's still a lot of many)