Understanding how to use ENS to replace public address

Can anyone help explain how purchasing an ENS name can help you send and receive crypto? For example, if I purchase "sample.eth" ENS, and I add my ETH/BTC/LTC etc public addresses to the records does that mean I can replace the long public addresses with sample.eth? So can I receive ETH by someone sending it to sample.eth instead of the long public address (and the same with sending)? If so, I'm assuming it would know which crypto you're trying to send/receive so it wouldn't try to send ETH from a BTC address, but what if you have several ETH addresses added to sample.eth (e.g. physical wallet, MetaMask, Kraken, Coinbase, etc). Any clarification would be greatly appreciated! 🙂