It was my favorite show. I think the first two seasons made it one of the best TV shows ever but it went down hill after the third season. If you don't think it has "picked up" by the middle of the second season, I doubt that you'll like it.
I really liked Lost, when all is said and done. But the point you're at (second half of season 2, first half of season 3) is basically the low point of the entire series. After that it picks up again.
Are you crazy? The fourth, fifth and sixth seasons just get more bizarre and string you along.