Whenever you gamble my friend, eventually you'll lose.

When I have a voucher somewhere, or where the withdrawal limit is high on a faucet and I don't want to climb up to the withdrawal limit, I go for the maximum variance strategy : a bet with a very low winning odd. Always better that keeping a low balance!

Apart from this case, that's all

I'm not really a gambler and that's no different when it comes to bitcoins. I have spent some coin at a couple sites because I was curious to see how they worked though.

Just dice is the best site if you want to gamble you just have to be responsible 

Yup. Gambled and lost 2.15 btc. Quit before you start!

Yes, you can gamble using Dice.  Always fun, but as someone said, all of those sites will eventually get your money in the long run.  You either have to be lucky, or make some quick money and run.

I prefer gambling in Sports betting.  Yes, the house still takes an edge, but I find there is better opportunity to make more calculated decisions and win money.

i have tried primedice (PD), bitcoinlivebets, peerbet, sealswithclubs (SWC), and satoshicircle. never won anything tho, except for SWC, i won 3 times on the freerolls tourney 

i say PD and SWC is the best atm, based on my experience
but remember, this is gambling, loosing to the house is a natural thing 

Gambling is about knowing the odds and accepting the risk.

He was just lucky.

No. You should spend your BTC to a good cause instead of inflating the pockets of some rich peoples.

No, unless I can figure out a miscalculation on side of the bank.

Be ready to use all you gamble for. Gambling is always negative expectation value. (Peerbet raffle is no edge? That would be expectation of 0.)