Are you just stating what is already known for a decade?
Yeah, the halving could be something that could change the value of bitcoin since miners needs the money also to pay for their bills.
But, it is not just about that.
There could be miners that do it for future preferences. Bitcoin could be the next valuable asset and that means more money to them.
I don't think any miner wants the reward to be halved. When the reward is reduced, miners stop working because they are unable to make a profit, which leads to a decrease in mining difficulty, miners. The remaining mines will earn bitcoins easier. The bitcoin network will adjust itself to create a balance.