Bitcoins are really improving to be honest. If you ask me then it will be really a great plan to use Bitcoins as your retirement options. Bitcoins have really grown in the past few years. So if you are someone who is in their late twenties, then definitely you can make your retirement life easily by investing in the coins. Just regularly accumulate the coins and after 40 years, definitely you will make good profits.
Its not that I believe bitcoin will last for a very long time, in fact I want bitcoin to be there forever, but we are never sure what will happen next to bitcoin or any crypto currency, so its also important that you have savings when you retire. Yes, bitcoin can be a retirement plan if you have holdings and bitcoin is still active, then it will be a great retirement plan along with savings, because as I said, we can never be too relaxed or too sure.
You can also diversify your investments, not just in bitcoin; you can invest in businesses or any other things that you can invest in and earn. In short, it's better to have a lot of options or a retirement plan because it will make your retirement more comfortable and secure so that you never have to work again. Personally, I aim to have one or two businesses before I retire and focus on investing in crypto currency and other things I can invest in.