Things that make no sense about Star Trek, The Next Generation

#1) How come everyone speaks American English? (Ok, besides Jean Luc Picard, but he’s really French or something.) Did America win the universe and now every place in the galaxy has to speak standard English?
 
#2) How do we know that the entire series isn’t all happening inside of Q’s little snow globe of amusement?
 
#3) Rock climbing in the holodeck. How high can you really go?
 
#4) Why no changing rooms near the holodeck? Remember the mud bath with Mrs. Troi, Worf, and Alexander? Did they track mud through the ship until they got back to their quarters? Or did the mud magically disappear because it came from…a holodeck?
 
#5) How come only the Romulans and Klingons get cloaked vessels? That’s a bit unfair to all the Vulcans, humans, and well -- everyone else -- in the universe...
 
#6) In between pushing the “go” and “stop” buttons, what exactly does the ensign do in the front seat on the bridge? Seems kind of boring after a while.
 
#7) Starship Enterprise holds 1,000 people/crew. Where’s all that waste go? You never see a janitor.
 
#8) How do they get fresh milk?
 
#9) You never see them hitting space debris at warp 5. I wonder what that would do to your average un-shielded starship.
 
#10) Q: The quintessential deus ex machina storytelling device. Really? It just seems too…easy and obvious.