Just watched season 3. Is it worth continuing?

Hello all.

I watched S3 recently and I dont know what to say. Felt robbed of my time more than any show/movie ever. I felt I skipped 90% of it and missed nothing. Ass. They dropped so many little plots and there are so many mysteries still. S2 felt the same but I stuck with it expecting something to be explained each episode. But nothing. Is it worth continuing? Is s4 the finale and does it explain most things? Or can I burn this series from my mind?