I hate people that don't understand itemization, they make games so much harder that they have to be
Let's give an example shall we?
You're playing
vs
...
gets 2 early kills before 5 minutes are even up... What boots would you buy in this situation?
A. 
or
B. 
If you chose A, you are an incompetent dumbass with no game knowledge. The enemy have no slows, the enemy have gap-closers that beat that extra 10 MS
gives, the enemy have on-hit burst and DPS, you have limited easy to dodge hard CC. SO WHY WOULD YOU BUILD
IN THAT SITUATION?!
Jesus christ it's so annoying.
give 45 Movespeed.