Agreed. My favorite of the SG series was SG1. I loved the well done mix of blending of ancient mythology with advanced alien culture. The visits to both under and overdeveloped worlds was reminiscent of the original Star Trek. The running story lines had the benefit of added variety any time they needed it by exploring a new world with the Stargates. A big advantage to the writers who put it to good use.
I watched SG Atlantis as well but it just didn't draw me in as much. SG Universe was going down some sark and mysterious paths that had my attention for sure but like you, I never expected to see an ending.
