So you're holding Bitcoin right now .What you wants to buy with your Bitcoin in future? Maybe fast forward next 20 year later.
I will buy a house and diversify some part into an investment that will give me daily income. I will keep the rest of my bitcoin in order for me to pass it on to my kids. However, I don't have much bitcoin in my possession yet. I believe that with my regular DCA approach and the zeal I have to accumulate more bitcoin overtime, I will have a good size of portfolio in 15 years time.
20 years from now you might still be alive so it is better that you use the money to set a business or anything that will generate you more money, while you are preparing for retirement. It is also advisable that you dont sell all your Bitcoin by then. Always leave a portion for future purposes. If you get lucky that you didn't use the money from Bitcoin to get the house like you got it from other source then there is no need to sell any of it by then.