But how to spend those monero when I want to in future, is there any wallet where I can put that private key or passphrase like in blockchain.info wallet for bitcoin if created with bitaddress.
Any secure enough wallet to import that monero address created from moneroaddress?
Sure you can use it at
https://mymonero.com/ its safe, dont save all your fund at one wallet. Same like dont put all your egg in one basket, in case one basket is drop not all egg crack. Divide your monero into 4 address or more, but make sure you have all backup for it.