Does a ceiling fan need to be wired to a switch?
There's no problem installing the fan without a switch. 

In many cases folks replace a switched ceiling light fixture with a fan, so the fan uses the switch that used to control the light.   In other cases the ceiling is too high, so controlling the fan via the pull chain is inconvenient.   

If you install the fan without a switch, you could always add a remote module later.  They're cheap, easy to install, and allow you to control both a fan and light.