Earlier quoted context omitted.
Bitcoin in particular is used as a store of value, or a form of "digital gold". Everything is speculation (you hope it goes up in the future, but no one knows for sure), but large corporations are increasingly keeping a balance in Bitcoin, as are wealthy individuals and fund managers. To understand its place in the world, you need to be a bit more familiar with government bond yield and risks, money creation/monetary…
You got brainwashed into believing this by Reddit. Back in 2017 when Bitcoin was utterly crippled in usability and scalability, the centralized forums upon which information was flowing were seized by bad actors and used to manufacture this narrative. Bitcoin was intended to be peer to peer money, not digital gold.
You can increase block sizes to a degree, but that threatens decentralization by making it difficult/expensive for nodes to sync and store the chain.
We have an experiment called Bitcoin Cash and endless other forks promising low fees, but adoption has not followed.