You've shown us--completely--the cause and effect of people's choices.
Exactly! This is reality, not fantasy. There are lasting consequences to Lois' actions. Anti-K found a way for Clark and Lois to come together romantically, but Lois' career has been severely effected by the fallout from her story, and there's no getting around that. Perry has been broken, too - it's good that we have hope for his future here in the epilogue.