Some people argue that this film lacks comedy, but it's subtle comedy(the type real life offers...nothing exaggerated and unbelievable...like too many Seth Rogan films). Owen Wilson is more toned down, but he adds his spin to a more down-to-earth role as a husband that chooses his life as a husband over the dream life he had pictured. Aniston delivers one of her best performances, in my opinion. I'm not a big fan of her acting, but she gives an undeniably good performance as Wilson's adoring wife.
Regarding the "nudity" and "sex", yes they hint at having sex, but nothing is shown nor sounds like sex. There is NO NUDITY!!! There is a shot of Aniston's naked BACK(not her backside, her back). All of the film's sexual innuendos are while they are married! If anything I think this sends a positive message to younger viewers that this is the way it's supposed to be...fun isn't over after marriage and in some cases, it's when the real adventure begins. Children these days have seen worse than this film shows on network TV and MTV. I didn't hear any bad language that isn't on TV already. It wasn't what most people consider the worst words. And lastly, the sad part of the film is realistic not morbid, murder, or uncalled for...sometimes I think people are so used to films like The Dark Knight that when they see a wholesome, realistic film they're disappointed because they're wanting something epic.
Give this film and chance and realize going into it that it's not the mindless, idealistic comedy that Hollywood has stuffed down our throats lately. It's heart-warming, wholesome, and true to life.