Sure, like crafted sets? I can play that game, here let me enlighten you:
It takes 9 pieces of the consumables from the Tomes of Philo per piece.
You have 12 pieces x 9 = 13500 Tomes of Philo for a full set / 100 per run = 135 runs x 35 mins on average = 78.75 hours / 5 hours per day = 15.75 days. Who do you know plays for 5 hours a day 7 days a week?
This doesn't include the weapon because Relic is easier to obtain. 900 Tomes of Philo / 35 mins per run = 25 hours just for Relic alone.
CM & Preat don't drop gear, only Tomes.
WP & AK drop sets that you will eventually have for every Job role by the time you farm enough Philo tomes for 1 set of DL + 1 Relic OR The tomes required for the crafting set.
After that, then what? Allagan? yeah sure, range based luck roll system determined by a loot table where you may likely not see a single piece of loot for your class for weeks.
Myth tome sets? 5010 Myth tomes / 300 per week = 16.7 weeks. 300 Myth tomes / 30 tomes per run = 10 runs x 35mins = 5.8 hours per week x 16.7 weeks = 96.8 hours.
So lets recap here:
70 hours for full set of 1 DL + 1 Relic = 40.8 Dungeon Runs
103 Hours for full set of 1 Crafting gear + 1 Relic = 60 Dungeon Runs
121.8 hours for full 1 Myth set + 1 Relic = 71 Dungeon Runs
You can't even put a time frame on Allagan gear. You are simply lucky or you aren't.
So lets put this in to perspective, because most peoples first set of DL gear includes their Relic:
70 hours for full set of 1 DL + 1 Relic = 40.8 Dungeon Runs
78.75 hours for full set of 1 Crafting = 45.9 Dungeons Runs
96.8 hours for full set of 1 Myth = 56.5 Dungeon Runs Per set as they are job role only
Total Dungeon Runs = 143.2 Dungeon Runs.
How many dungeons do we have to choose from again? 4
Now, like it or not, try and paint a pretty picture over it all you like, fact is, 4 dungeons to run this many times is enough to make anyone quit due to lack of content. Lets not also forget to mention, these are assuming you never fail, get disconnected, have a bad group, wipe, AFK or have any down time what so ever.
Now that all the boring math is out the way, how many dungeons do you have to choose from to run over this amount of time? 4.......if you are still not following after all this, then I can't help you. This is my whole point, right here in this very paragraph.