I bought this bike 2014 for 10k€. Half of it was paid with with the ~23 BTC I sold @225€.

Don’t even begin thinking about it. We don’t live in a “what if” world. There was no way you could have predicted the sudden increase in price. If you had fun with the bike that’s what matters. I recently had a position open on Binance that would have made me very rich we playing with stupid leverage, but I decided to close it. I felt kinda bad for a while but realized felling like that would probably lead to fomo and bad judgment in the future. Enjoy your things, take your profits, don’t get pulled into a downwards spiral seeking the “what if”