Both are still painful in the pocket. As for me, I only play slots when I want to chill but if I want to be serious and possibly want to earn a profit, I will play strategic games like black jack and poker. Blaming casino for your own loss is too funny but may be some will believe on it if the casino is guilty that there are manipulations that happened.
For me I play for fun most of the times with small amounts keeping my budget in mind but don't hage something like playing professionally for making serious money even on strategic games like poker also.I love playing poker but when I am interested in it not for making money because we still don't have guarantee we will win it so luck is also required in these games.
No matter how serious we are in the game, when luck is not on our side, we will lose, and my problem is personally if I am serious and focus on the game it will make me dizzy and when I lose the emotions I feel are worse than when I play relaxed and more to enjoy the game. Maybe we will have a lot of differences on this matter, and it becomes commonplace. I personally, if I had to choose between playing seriously and focusing, I would prefer to play relaxed without any pressure.