Can you clarify your question? Sending your bitcoins with a normal Bitcoin transaction to an address in another wallet you control is not in any way different from sending bitcoins to any other address. If every Bitcoin transaction was unsafe, we'd have a problem.
Agreed.
Of course, whenever you receive significant funds (including from yourself) you'd want to make sure your receiving wallet is functional and backed up.
Agreed.
Migrating wallet files or private keys is a different issue.
So this is clearly the safest way.
You are very good at breaking problems down into simple terms.
Thanks.
On a side note: Given your signature, Have you seen the IMAX theater in Ashdod?