I started out with logic back in 1997 or 1998 on a very low spec PC. it took me a while to get used to it, but i have used that same version (3.6 or something ridiculous like that) ever since. It just goes like a train. I used a dedicated PC for music now that runs Windows ME, because logic and XP don't work that well as a team.
I have tried other programs . . . Cubase, Cakewalk and so on . . . but I keep returning to Logic. I accept that my version is out-of-date and does not have all the functionality of contemporary packages, but there are always ways of coping with that.
I'm sorry your experience has been disappointing. My hasn't.
However, I do know that a large part of satisfaction comes from how well the program's construction matches how you prefer to work. A friend of mine tried Logic, but couldn't come to grips with it. He's just bought himself Sonar and has taken to it like a duck to ducksoup.