They don't have be the only ones profiting from their investment directly. Instead, they can pass it on to their children after they die. Let take it from another perspective Why can't people over 70 invest in Bitcoin? It's likely less stressful than someone of the same age running for the Post of a president. My point is, as long as these older people can still read or are physically capable and are willing to understand the technology and risks involved, they can take part in the cryptocurrency market. There's no age limit for using Bitcoin.
before investing in anything it is always adviced to DYOR (do your own research). carrying out research helps you understand further in details about
1. what you are putting your funds into.
2. how long such investment has existed.
3. what you will benefit from such investment.
4.precautions to take before and after investing.
At this point, I'm having trouble understanding what you're saying. I thought since you know about Bitcoin since 2014, you'd know that if you lose your phone, your Bitcoin isn't gone
As long as your seed phrase were written down and kept just as you said, you can always recover or have access to your funds.
Bitcoin or cryptocurrency are not stored in your wallet, but are recorded on the block chain. the wallet serves as device which connect you to the Blockchain and displays the total amount of funds related to your wallet address. I think you and your instructor still needs to learn a lot about Bitcoin because from what you said