Sending Bitcoin to non-existing address

Most of time I send Bitcoin on any platform they tell me "sending bitcoin to the wrong address may cause the loss of the entire amount sent" or something like that. And I get that. The thing I don't get is why isn't there any way to prevent this. Shouldn't be relatively easy for a platform or even for the network implement a algorithm that makes sure that a address exists? I think Coinbase has something similar that checks if the address that you are sending to is valid or not and I don't understand why doesn't everybody have a feature like this. Honestly I feel safer with that especially when I transfer large amounts of BTC.