Why should I be excited for Grind Parties?

[Greed]

Or I just don't suck at them.

I just recently finished a replay of FF9 -- I only had to spend maybe a total of an hour preparing myself for the final boss because I ran through most of Ipsen's Castle.

Very rarely do I ever spend an exorbant amount of time grinding to finish a single player FF. My grind time per FF play through is probably less than three hours total for the entire game. I explore, I find secret equipment, don't use walkthroughs -- that all adds to my overall character level and ability. I don't just sit there in one area until I can brute force my way past the next.

you mean you just finish the game
( I didn't play 9 but in 8 you can't kill omega or bahamut without grinding
in 10 Internationale... 999999 normal attack from boss if you only have level 99
without grinding everything )

same thing with all FF secret final boss