Bitcoin is highly distributed, providing unrivalled decentralisation. Low cost of setting up and running a node means this number will remain high as the chain grows. Nodes enforce integrity on miners; don't trust, verify.
Every day huge values are transacted in Bitcoin blocks with no recourse to chargebacks or disputes. Bitcoin transactions are final. And in practice, the Lightning Network utilises Bitcoin to increase this value even higher.
Miners are providing the equivalent output of 15 nuclear power stations in the competition to produce blocks. This is a huge amount of security provision and signifies vast investment in the integrity of bitcoin.