I fell in love with FF11 for two main reasons:
1) The journey from 1-75 was FULL of adventures and surprises and accomplishments and FUN!!!!!, the game most certainly did not start at level 75. The adventure started at level 1. I remember being under level 10, not even knowing of linkshells yet, getting 5 randoms together in Windy, and whipping them through the rank 1 ~ 3 missions, not because they were easy, but because I had done 1 and 2 many times and knew what needed to be done, and I needed their help to get through 3.
2) The game was challenging and complex. From the first time you set foot outside one of the starter cities, you had to be on your toes to stay alive, succeed and progress; and you had to pay attention to the world around you to learn how it worked so you could operate effectively. There was none of this pandering to the lowest common denominator of the masses BS to try and increase sales (and profits)...at least, for a time.
Oh, and trying to figure out how skillchain and magic burst work with other new adventures in the Buriburi outpost. The journey to Jueno, and the tower in Qufim where you have to go through for a mission.... those were the good old days. And let's not forget first exploring places like Garliage without the help of any high levels....

Maybe some of these do not ring a bell to some of you but I started FFXI when it was first launched in NA.