Do you guys think MapleStory is FUN?

I'd say only the ones that force you to log in are the ones that hurt the game. Feeling like you're obligated to log in and 'play' in order to better your character is a not a good design. Stuff like the Valentine's Day events were good for everyone, you could do them pretty casually and get decent rewards or if you had the time/patience you could do them all day and get a ton of stuff out of it. My favourite events are the ones that don't result in any actual advantages to your character though, the Mesoranger DDR was probably my favourite, didn't really get anything out of that aside from entertainment.

I was talking more about the exploits that allowed people to exploit the item rewards, not the actual concept, that was my fault for not clarifying

Well, i more or less think people can truly have fun with MapleStory. I'm not trying to sound argumentative, i mostly just genuinely want to know if people truly find this game FUN and NOT a CHORE/JOB.
I kinda want to know if people with a sane-mind like MapleStory, or if its just the addiction that's doing the talking.

You were on the mark with the abuse that you have to tolerate as a player, but as for a chore/job, those are just negative connotations of a "hobby". Some people may see those chores less as chores and more of a fun hobby. If your job is your hobby you never work a day of your life, as they say.