I follow a strict bankroll these days so my max bets aren't a lot. Something around 0.1-0.3. Can go up.
But in the past I have gambled upto 14 BTC on one bet.
14 BTC ? That would be 6-10 months salary in my country, I would have converted them to cash and enjoy a nice vacation a gift I would have gifted myself. By the way you must have a lot of money to bet that huge amount on a single bet. Hope that it ended up well on that day when you gambled 14 BTC on a single bet.
Where are you? Maybe if in 2nd world country? It is decent amount in western country, for example I live in Europe I have 2k euro salary and I spend 500 euros on betting per month. I am still +ev now, satisfied with my profits.