What are your expectations?
I expect an uptrend, but after that...
There is no special reason for the uptrend. Yes in theory after the halving the rate of bitcoin creation drops in half, but most bitcoins that will ever be already exist. So the push for higher prices is simply getting less and less pronounced overtime.
Skipping temporary peaks and normal fluctuations, after a while you'll see its natural price, perhaps in 2021.
But the simple expectation makes human react, and that is why.
Incidentally mining is also gradually becoming less and less profitable, but everyone should already know that.