Fairy Tail is good at the beginning, but when you get to the Grand Magic Games Arc, you might commit suicide from how terrible is. The GMG Arc is what said to have killed Fairy Tail. Then you have Tartaros, which is best arc in FT, but there are two moments of the arc that will probably irritate you if you know the full story.
."Because she's Erza."
.Sting and Rogue defeating Minerva's demonized father, who was stronger than the 9 Demon Gates.
But Tartaros is still a very good arc. It actually got me reading FT again. But when this arc pass, the writing will get repetitive and terrible. And the fanservice is ridiculous to the point it's porn. The fanservice takes the drive away from the series (Most due to poorly written plot). Plus, there's a lot of BS fights in the series. The good guys never lose, because they have Nakama BS power ups. It gets boring and very annoying. If you're an intelligent person, it will give you a headache due to the BS that happens in the fights.
But if you still love action and adventure. It's for you.