However if you can control yourself then those losses are not really that important as they will be on the low side, but some people cannot accept this and as such they let their emotions to surface and get indignant that they have lost, then they bet more than what they had in mind during the session and that is when the stories of massive losses actually happen.
I'm not really surprised by OP's experience as casinos are the easiest way to bust or lose money I have proven that myself, you can lose everything in one bet, if you're looking to make money you'll always be tempted to go all out and bet everything if you're just want to enjoy playing you'll not put everything in one bet, you'll take things easy and make most of the money that you allocate to play with.
And most of all, if you are only aiming to have some fun, you are ready to accept that the amount you spent will be burned after playing.
It's just a bonus if you win, but most of the time, you'll lose and let the enjoyment be the price for having that fun. Unlike with OP's situation
he might be trying to grow his bankroll and each time he suffers from losses, he aggressively tries to win it back till he finds out that nothing left
inside his bankroll.
You're definitely right about that! Gambling is only good thing if you just seek it for entertainment purposes or some past time activities but if you're seeking casinos to gain money or think of it as a part time job where you can earn then that's where the mistakes happen as people already know that mostly casinos are the one who ends up winning at the end of the day than the gamblers yet they still gamble in hopes that they could pull a good hit.