I stopped watching at the end of Season 8 and I said I wouldnt watch it ever again after the whole seaosn's build up was about the battle between Doomsday and Clark and Clark killed Doomsday in 10 minutes.
You'll love season 10 then. Lex Luther is billed as coming back but who comes back is actually a 50 year old clone of him and he dies in the first episode. In the third episode Darksyde appears but instead of being a super powered god he's nothing but black mist and crows??? This ball of "darkness" posseses people. Yeah you know, EXACTLY like the first time that zod appeared. Oh but it gets worse. He's defeated when supergirl holds here magical bracelet in front of him.
Don't get your hopes up about clark becoming costumed btw.... that's the hook for this final season. Most likely he'll put it on in the final shot of the final episode and it'll be on-screen for all of 30 seconds. Best-case scenario he'll put it on at the beginning of the final episode.
Don't take it too seriously man... this is one of those time waster shows. Never at any one point has the show been any good. It used to be a lead in for buffy and now it's a lead-in for supernatural. That's all it is, a time-slot filler. That being said I find it entertaining to see how the shows producers are going to take a small budget and poor writing to ruin one classic dc character after another. THAT is why I've watched the show for so many years... to see just how bad it'll get.