It just filled out a lot of backstory for me. The final arc of season 5 is pretty good. They do some crazier stuff in series 4 and 5 that are pretty interesting but yes I did take a break around season 3 and came back to it later.
My God does anyone remember Haze? What a shit show that was.
Also Best: Burnout Paradise, The Last Of Us, Uncharted 2 (NOT 3....I have my reasons), Killzone 2 before they changed the handling to appease people who just like quick snappy games. I liked that it was heavy.
I find I just have to stick with it and essentially practice at one game. I used to be pretty good at Gears and then I stopped playing for about a year. Tried again the other day and I was a a complete waste of space. Just stick at it.