Bitcoin is "just" sound, decentralized money.
Hard capped is another worthwhile aspect π
As such it prevents you to be affected by inflation or being subjected to not being able to transact to or from anyone you would like to/from.
That are first order effects.
A other things take more time to think through.
Like how it will effect banks/governments if their printing fiat capabilities are taken away.
The first order effects are for people individually.
Most other effects are humanity wide.
It will literally change the world we know, it just takes time.