sometimes decentralization is sucks , you know what ,
you have 100% responsible on anything happened to your money ,
for example when you lost your money because hacked or any other technical problem noone will help you ,
so it is sometimes worth more than just money but sometimes horrible.
Now that is all on you, even if you have fiat and you are keeping them at home and someone robs them, who would pay you back for that? That is what the case with bitcoin, you are your own bank, you are keeping your money to yourself so if they are lost no one would be responsible but you.
Well if losing money is the topic, than I think Bitcoin can be the # 1 source of it online, it is not because of security of being hack, but more on the part of where you spend it your own. Several sites such as HYIPs and Gambling sites tends you to lose money rather than earn anything from it. Bitcoin gave us the option on spending online and we are the ones messing out own money.