Thanks for the help everyone. Very interesting.

The reason for my withdrawal would be to hold the crypto long term in cold storage, NOT to convert back to fiat. I read that it's better to store it that way as opposed to keeping it on the exchange long term.

However, if I convert it from BTC to another coin for this long-term storage to save the commission, I guess I'm taking a gamble that that coin will hold it's value... maybe BTC is the wisest choice despite the larger fee?

I noticed that the withdrawal fee for Bitcoin at my exchange was about $6 (0.0005 BTC)

Then I looked at the fees for Stellar (0.02 XLM) and Ripple (0.02 XRP) which equated to only a few cents.

My question is why wouldn't you change your bitcoin into one of these others, then withdraw, paying only pennies instead of $6.

What am I missing?