on Writing Forward:
A longstanding grammar myth says we’re not supposed to end a sentence with a preposition. For years, this myth has persisted, tying writers up in knots and making their heads spin around sentences that simply must end with a preposition.
For example: Which store are you going to?
Folks who were taught (and are now attached to the idea) that one should never end a sentence with a preposition will argue that the proper way to write the sentence is as follows: To which store are you going?
But nobody talks that way.