user63459: I bought some bitcoins on Localbitcoins and Coinbase a few months ago, as a purely speculative "investment". 
Now I noticed that there is a Bitcoin certificate with 1:1 leverage available at the online bank I have used to trade traditional stocks and stock funds for the past 10 years. The buy and sell fees are 2.5% for the certificate. 
Now I'm curious if there is any reason to bother with the risk and hassle of using cryptocurrency exchanges or if I could just as well just buy the certificate if I want to "invest" more in Bitcoin? The online cryptocurrency exchanges have similar fees, and it seems like the risk is higher and the user experience is much worse, especially when selling and withdrawing to fiat currency.
Obviously I'm not interested in using bitcoins for payment, this is for pure speculation purposes.

user62587: You only own a bitcoin, if you control the private key. What happens when the online bank (a much more lucrative target than regular joe for hackers) gets hacked, and the bitcoins are siphoned away via monero or other methods? What happens when the bank makes a poor gambit and fails? 
Compare that to the risk of losing your own private key, getting mugged/robbed, or losing everything due to other reasons (serious brain incident leaving you vegetative). If you manage to keep your coins safe, and you leave clear instructions on how to access the bitcoins when you are absent, why would you not just go to an exchange?

63459: <p>I bought some bitcoins on <a href="http://localbitcoins.com" rel="nofollow noreferrer">Localbitcoins</a> and <a href="https://www.coinbase.com" rel="nofollow noreferrer">Coinbase</a> a few months ago, as a purely speculative "investment". </p>

<p>Now I noticed that there is a Bitcoin certificate with 1:1 leverage available at the online bank I have used to trade traditional stocks and stock funds for the past 10 years. The buy and sell fees are 2.5% for the certificate. </p>

<p>Now I'm curious if there is any reason to bother with the risk and hassle of using cryptocurrency exchanges or if I could just as well just buy the certificate if I want to "invest" more in Bitcoin? The online cryptocurrency exchanges have similar fees, and it seems like the risk is higher and the user experience is much worse, especially when selling and withdrawing to fiat currency.</p>

<p>Obviously I'm not interested in using bitcoins for payment, this is for pure speculation purposes.</p>
 62587: <p>You only own a bitcoin, if you control the private key. What happens when the online bank (a much more lucrative target than regular joe for hackers) gets hacked, and the bitcoins are siphoned away via monero or other methods? What happens when the bank makes a poor gambit and fails? </p>

<p>Compare that to the risk of losing your own private key, getting mugged/robbed, or losing everything due to other reasons (serious brain incident leaving you vegetative). If you manage to keep your coins safe, and you leave clear instructions on how to access the bitcoins when you are absent, why would you not just go to an exchange?</p>
