Why do people say this?  Its the most empty argument against RE5.

Lets look at past RE games.

RE0 - Takes place at night but 85% of the game is spent inside a mansion, chemical plant or lab where it is well lit in most rooms.

RE1/REmake - Takes place at night but 99% of the game is spent inside the mansion or guardhouse or sewer or lab where it is well lit in most rooms.

RE2 - Takes place at night but 99% of the game is spent inside the RPD or the sewers or the lab where it is well lit.

RE3 - The first part of the game is actually daytime, it turns to night later on but this also has a lot of indoor areas (though a lot more outdoor areas than previous games), most people cannot even tell the difference when the game switches to night, or that it was even day to start.

RE: CV - This starts off at night but later turns to daytime (in Antartica), also has many indoor areas where it is well lit.

RE4 - Starts off daytime then later turns to night, has many indoor areas in castles, caves, more castles, more caves and so on...where it is well lit.  Does have quite a lot of outdoor areas though is always well lit.

RE5 - Starts off daytime and turns to night later, then day again and later night again, lots of outdoor areas but like other games it has caves and ruins and lab areas that are all set indoors where it is well lit.

So what exactly is the need for being at night? What did RE5 do differently aside from the very sunny first chapter?  If you made every RE game daytime for the entire game most of the games would not have any notable difference at all since you are never in a position to be able to tell and where you are is well lit (like if it was daytime).