I want to take my BTC investment to another level,so which of this wallet's listed bellow we serve me for a life time,that even my wife or children can access,if it goes other wice.
Software wallet
Hardware wallet
Centralize exchange wallet
Paper wallet
In my opinion, the best solution is a hardware wallet. I'm planning to get one for myself soon as well. You need to set a budget and see what would work best for you. It also depends on what you plan to store on the wallet and how much. There are also quite a few decent software wallets. On this page
The Bitcoin Hole , you can find a detailed comparison and many promo prices you can take advantage of
I am a user of a hardware wallet and a software wallet. I adjust to its use. If to store Bitcoin and hold it in the long term, I will use a hardware wallet. But if for transaction purposes, I prefer to use a software wallet like Electrum. Those who often make transactions such as sending deposits to exchanges for trading may feel more comfortable using a software wallet. Because the access will be quite easy.
What must be remembered and is important is not to leave Bitcoin or other assets on the exchange. Use the exchange to trade or convert assets to fiat.