Lawd is Legends of Tomorrow a shitty show.
What makes it shit? Do you watch Flash and Arrow? I think I recall you watch Arrow but I'm not sure about Flash. It ties into those, right?
It's connected in that it reuses a hodge-podge of folks who started out in those shows but never became core characters. Now, Flash has its weak points, but the show's still enjoyable and generally pretty good. Arrow has great and terrible moments but finds itself falling into the good to decent area. This one just doesn't have any strong suit.
The main character (Rip Hunter) is an inept douchebag, the villain (Vandal Savage) is a rehashed, defeated villain from a Flash/Arrow crossover (not to mention rewritten from the comics), and the story basically consists of them finding him in different years and fighting him and losing every time, only to find out SPOILER ALERT
he's been pre-ordained to win by Rip's Time Master bosses to beat back a Thanagarian invasion. And, now that its been revealed that it'll be a different arrangement of main characters in the next season, so why invest yourself in them? SPOILER ALERT
One of the better characters, Captain Cold, was just killed off for a stupid reason, which makes his re-occurrence as Flash's arch enemy problematic.. Not to mention that Hawkman and Hawkgirl are the most dysfunctional bullshit couples in comics and continue the trend in this show. Ray Palmer/Atom is still a mish-mash of Ted Kord and Tony Stark they couldn't figure out from Arrow. Firestorm is a mouthy black kid (though he's one of the few to actually show growth and be a decent character) and know-it-all elderly white guy (the same annoying old fart he was in Flash) odd couple. White Canary is still the whiny-looking face fucker upper from Arrow. I like Captain Cold and Heatwave (who, despite them screwing with his character in this show, is still entertaining), but I liked them better as Flash villains.
I did enjoy the Jonah Hex episode, however. But then again I like me some Jonah Hex (unless you count that last movie...ugh).