I dont really think that 0.01 btc is something that is worth to invest. Sometimes there are thousand btc in one site so 0.01 is not really worth it. You could have better chance of getting profit if you just gamble that instead of throwing it away into investment, you wont get any profit because It is like less than 0.1 % of the bankroll
As an investor I agree with what you've said if you're looking to go for huge profits, 0.01 btc is not a good amount to invest. But gambling the said amount isn't advisable as you could lose it right away. It's much better to hold it in your wallet than to gamble it.
on a casino bankroll will just give a frustration. Because we are mostly investing for the hope of we are going to get good return from it but we already know how the casino's are giving feed back to that opportunity they are giving to their investors. And that amount is surely not worth to put there.