Fair enough, but the general consensus seems to be that the first 50 hours are the "worst" (and by worst I don't mean it's terrible, just that people seem to agree that's the chunk that's mostly dull/grindy/a slog) and I definitely don't have time to give any game 50 hours to get to the good stuff. Five? Sure, maybe. Fifty? No way. Especially when I'm not into MMOs anyway and try to avoid ever playing anything online with randos in general.
I would love to see what all the Shadowbringers hype is about, though. MMOs are hardly known for their strong narratives, so the fact that so many say this is one of FF's best is really intriguing to me because that's a high bar indeed.
Think of it like this. FFXIV is 4 complete games, that if you're mainlining the story each take roughly around 50 hours:
A Realm Reborn is a 5/10 game with select moments of much higher quality (mostly towards the end).
Heavensward is a 9/10 game.
Stormblood is a 8/10 game.
Shadowbringers is a 9.5/10 game.
Personally I would wait until March/April. They've announced that they are going to be deploying a patch that aims to thin out ARR and make it quicker to get through. How exactly, we don't know yet, but anything would be better than what is currently there.
If you don't like MMOs, the free trial won't convince you. All the good stuff comes later, unfortunately.