Worse experience is when I got scammed on facebook where I invest using Bitcoin for pay-in/pay-out. I'm just a newbie that time and dont understand Bitcoin yet since my attention is focus on the investment where I joined. After losing my money, that's how I regret spending Bitcoin instead of holding it. After that I decided to get to know about Bitcoin and learn how I can take advantage the volatility. Good thing I have someone who guide and teach me on how it works. I have many bad experience but the good thing about it is I learned a lesson to value Bitcoin more.