thinking bitcoin reaches $100k is something very realistic because as you said before, before the halving started the price of bitcoin had already reached $70k. However reality says otherwise because approaching the halving, Bitcoin prices tend to move down. Don't be discouraged, keep holding onto the Bitcoin you have because the opportunity to reach $100k is still wide open.
It is indeed wide open. You may have seen bitcoin's price going down today while approaching the day of the halving, BUT the real bull run usually starts several months after the halving. It was where bitcoin tend to break new heights and records a new ATH. Though this time is a little different since bitcoin have already surpasses to a new ATH months before the halving, but I don't think it will stop there. In fact, it is slowly recovering now after it went down to $60k. I believe the investors are starting to realize what they are about to miss in the next 5-8 months from now.
There are speculations that bitcoin may hit 6 digits in the last quarter of 2024 or early 2025. Only the weak hands are going to sell at their bags at this stage.