I realize this is the last episode of the season and possibly the last episode of the series if it doesn't get renewed so they wanted to resolve a few things but MOM shutting down the whole Center because they've sealed away all Earth's evil seems incredibly shortsighted. What about all the extraterrestrial threats they've faced that were either lying dormant then awoke to cause chaos or the trouble cause by aliens who've arrived more recently? Without the Center who's monitoring alien spacecraft in Earth's vicinity? Or what about the creatures created by scientists doing illegal genetic experimentation like the Ratman and the Mothman. Who's going to handle the next batch of mad scientists? Even if she thinks she's just taken care of all the supernatural menaces she should know better than anyone that the Center's still needed.