Non sense topic, if i have 10k btc, i will buy super cars, seaside villa, plane, yacht. I wouldn't lose 10k btc, because i spend it.
If you have 10 bitcoin now, you can buy super cars, seaside villa, plane, yacht. If you hold for 20 years, you can buy cities.
No way, may be after 20 years, bitcoin will never remain in this world or may be he will be die, so better is that, use the bitcoin. If you have a busniness mind than do more investment with your own 10k bitcoins and get double reward. Otherwise use it as you said buy car, seaside villa and more what you want, not a bad idea.