No,you aren't the worst gambler (for now). You made a good decision to stop even though you already lost your 10 btc and still hold the rest (15 btc).
You and we always have the reason why you/we must continue this live, there are still your parents, your brother & sister, wife and your children (if you already got married).

Here is an example of a gambler worse than you, he lost 360 btc just in some minutes...

Considering the fact that most of the people are well below the 21 bitcoin mark,you did hold 25 bitcoin which is a good achievement and if you make a decision to gamble with your coins you have to take into account of the risks involved and you already mentioned that you really like to play a high stake game,which is really thrilling but it could burn a hole in your account if you are not that lucky and glad that you have not burned everything because you still hold 15 BTC,usually people would burn everything trying to recover the loss,which is always a stupid move.

@torry28 That is one heavy roll and a million dollar minute ,is that a recent roll or is it a screen taken when the price was below $500.

it's really frustated indeed when you lost half of the whole wealth you have , but to think end the life are too far away. just be grateful , a lot of people out there even struggling just for eat , have no place to stay and even survive to life . and you here want to end your life? try talk to someone close to you about this problem .

You are not the worst gambler in the history mate.Just see above on torry28 post their a user of a dice site is lose a 360 btc in just minute compared to you.
Thats the life dude.

Gambling is not meant for profit, and in your case it would be better to stay away from it for the rest of your life, because even if you'll just come to bet $5 you might lose control and start wagering recklessly again which will eventually lead to a big loss. Just move on, never look back, save your 15 BTC and watch how they grow safely.

makes your loss as your lesson to continue to live, you don't have to end your life, i am sure that there is a good thing that you can learn from your mistake. my suggestion is better to stop from gambling, use your bitcoin for any other purpose and don't playing gambling again. you can do it from now on and you always have a chance in your life.

Lol, stop complaining about it, you already have 15 BTCs to use wisely... It's surely a big loss, but not a reason to end your life. Next time be more cautious and play just with 1 BTC, you have enough conditions to recover your money by investing your big bankroll somehow.

Money comes and goes very easily, there are millionaries losing everything in one day and recovering all the fortune on another. Be smart, grow your 15 BTCs and come back to the game later.

of course it's always about money , do you think op feel so desperate because of another reason? no i don't think so , pretty clear he is so desperate have to see his money worth almost half of the whole money he have should gone wasted , where at first time he expect to make it double or more. going to regular work as usual to earn that amount require a lot of times , i know that feeling and he want it back as easy as he spent wasted it.

that's the gambling risk.
i ever lost 6 BTC too in 4 days for dice

wow its big amount that i only can imagine, i think you have big loss, maybe in out there, many people is losing more big than you and i think you should be stop right away from gambling before its too late. you are not the worst gambler, you still can continue your life by not doing gambling anymore and use your 15 btc for other thing like trading, investment in gambling site (but don't playing gambling because you know the risk more than any other people).