Halving is a bit of a nothingburger for everyone except miners. They are the only ones that should see any real effect. Lots of machines will no longer make money and will need to be repurposed or scrapped. The fact there will now be an average of 900 new bitcoins produced each day instead of 1800 is not going to have any real effect on the supply/demand equilibrium of a market of 18 million coins. The only change users are likely to see is the smaller number of miners will probably mean higher transaction costs in the short term until the high fees bring more investment in new mining machines.