You mean buy and sell goods and services? Correct me if I'm wrong, but I don't think basically anyone uses ETH for this (compared to BTC and BCH where at least

You mean buy and sell goods and services? Correct me if I'm wrong, but I don't think basically anyone uses ETH for this (compared to BTC and BCH where at least some merchants exists). If you want to buy and sell tokens in a decentralized fashion, then you'll have to deal with smart contracts.