Did these people ask or pleased with you to enrich them? 
(just being sarcastic tho), but you might not have held the 1 Bitcoin till it gets to today's price or value. Honestly, if you had not spend your 1 Bitcoin in freebitco, would you be able to hold it till now? I am guessing that you would have sold it before now. Whether people are still gambling or betting with Bitcoin or not, it doesn't stop the casino from being richer, gamblers are still enriching the casinos irrespective of any currency they are using (be it Bitcoin, fiat, cryptocurrencies) .
This is why gamblers need to gamble with an amount that can be afforded to lose and to make sure whatever amount is used for gambling should be an amount that won't make one regret or think about the loss in the future. If gambling with money that won't be needed, I don't see a reason why one should later think about it. (just being sarcastic tho), but you might not have held the 1 Bitcoin till it gets to today's price or value. Honestly, if you had not spend your 1 Bitcoin in freebitco, would you be able to hold it till now? I am guessing that you would have sold it before now. Whether people are still gambling or betting with Bitcoin or not, it doesn't stop the casino from being richer, gamblers are still enriching the casinos irrespective of any currency they are using (be it Bitcoin, fiat, cryptocurrencies) . As for those who count the amount of BTC they have lost so far in gambling, there is no need to talk about it because if there was no Bitcoin, they wouldn't have held it, and even if gambling platforms were not using BTC, they would have still lost the same amount or more in gambling.