Have you played any game where you got to a boss and just couldn't beat it because of whatever reason?

One recent game that comes to mind is Star Ocean The Last Hope. Each boss on this game got more ridiculous than the one before it, taking between 30-60 minutes to beat. By the time I got to the final boss, I realised that despite all my grinding I couldn't even make a dent on it with my attacks while it owned me with no efforts. Add on top the fact that the save point before the boss is so far back that you have to go through an area where you essentially have to fight the previous bosses to get to the final boss and then watch a long cutscene to even start the final battle, I just said screw it and didn't bother beating the final boss.

Any of you have similar experiences?

Tia

From Ys Seven.

I could beat the first form; I could struggle through the second form but would run out of potions for the third form.  And then there was a final 1v1 when you play with Adol after that.

I'm going to go back and try to beat it one day.

Archdemon in Dragon Age: Origins. Had to switch difficulty to "Easy". I felt no proudness in beating the game after that.

The weird tank/angel thing from Persona 3. You have to somehow beat both at once but I cant figure out how so I havent played in months :p

Ah, just realized it. Other than the Archdemon (which I eventually beated), this is the only boss character that I've never, ever managed to defeat:

So far I beat all of them! So far...

Emperor Ing in Metroid Prime 2. I know there's supposed to be trick with the screw attack but I never got the hang of it and beating him the regular way is really tough.

August full moon boss? You have to defeat them simultaneously, or they'll revive eachother. It's a pain in the arse, I know.

I don't think I've ever given up on a boss in a game I've really liked.

Gruntilda in the original Banja-Kazooie. Gave me nightmares as a kid. So hard.

Also, Wario in Super Mario Land 2. Every time you died, you'd have to go through the entire final level again, it was just too much.

T_T

I haven't had this happen in quite some time, but I still have the first .hack unfinished because I can't beat the last boss. A couple games like this when I was younger.