I've been to casinos twice, and hosted countless $10 buy-in hold 'em games at my place years ago.
On the poker games I definitely lost out more often than winning anything. But had good times.
Went to Vegas once for a 311 concert a little over 10 years ago, and obviously went to a casino where I stayed, because I'm east coast, so I go on my farthest trip from home ever to the gambling capital of the world, of course you go to the casino.
Would have loved to try some Hold 'Em there, but never saw any table games at all running. The only thing I saw happening at all was slot machines.
Do I brought $50 cash with me one day and left my wallet in the room. Lasted for hours, but lost it all eventually. Which is what I assumed would happen, and why I didn't bring my wallet with me.
A couple years later the group that went on that trip was going to a casino somewhere within about 5 hours from here. Can't remember where exactly. Not Atlantic City, but somewhere on this side of the country.
Anyway, actually won about $125-150 or so. Bought fast food dinner for the group with it, kept about $40 or so.
So given that I had a good time, I'd say I came out ahead.