There's nothing really wrong with KYC, but you should pick your exchange carefully. I use the Binance exchange, and I've been verified for KYC there for about 4 years now, even though they don't require it of their users. You can still use the Kucoin and CoinEX exchanges without having to be verified for KYC, though. If you intend to buy in large quantities, centralized exchanges are not secure. They will become suspicious of your actions the instant they realize you are buying in small amounts.