You guys have seriously not played competitive war before
Anyways, being serious:
Is it not possible that you may both be right? Yes, playing a game competitively is fun. However, playing to win isn't everything. I've played games with random games with people where we just go for the flashiest things possible, and all the shenanigans we can do (e.g. jab kill on a recovering Jigglypuff, eating Ness's PK Thunder with a Kirby PK Fire, saving a 200+ percent Fox at the very bottom of Sector Z using dair-uair combo, resulting in suicide but saving the other guy, terrible DI resulting in a 0-999% combo, ending with a stupid move KO or Falcon punch, etc). We don't care who wins, and the result doesn't matter. We're still having fun making stupid combos that would be completely pointless in a match. Then again, sometimes we play this not trying to win variant competitively, where we each try to top the other guy's flashy thing or shenanigan with a better one.
But basically, I agree that (for the most part) competitive leads to having fun, but that's not the only way to have fun. Just fooling around with a game can be fun too.
Using War as an analogy is not exactly accurate, as there is no skill involved, and it just involves flipping cards non-stop... and the most excitement you can get from a game of war comes if you flip the same card like 5 times straight...
Don't know if that's what Nixxxon was saying or not, but that's what I think at least...