Thx 1138 movie questions.?

Just watched thx 1138 for the first time last night and thought it was an okay movie; about 7.5/10. Anyway I had a few questions: Was that a picture of Jesus in the confession booth? Why did they show a lizard inside the confession booth? Did Alec Guinness Voice one of the robots? Was anyone controlling society or were people just blindly obeying the rules because of the meds? Was there a nuclear war that forced everyone under ground? Did they kill LUH and take her baby? Is the movie supposed to take place in 2075, 2175? Were those dog people mutants deformed by radiation? Was thx1138 doomed after he escaped? This film left me with a lot of questions.